Conceptualizing Knowledge Creation: A Critique of
abstract Nonaka’s proposition that knowledge is created through the interaction of tacit
and explicit knowledge involving four modes of knowledge conversion is flawed. Three of the
modes appear plausible but none are supported by evidence that cannot be explained more
simply. The conceptual framework omits inherently tacit knowledge, and uses a radically
subjective definition of knowledge: knowledge is in effect created by managers. A new
framework is proposed suggesting that different kinds of knowledge are created by different
kinds of behaviour. Following Dewey, non-reflectional behaviour is distinguished from
reflective behaviour, the former being associated with tacit knowledge, and the latter with
explicit knowledge. Some of the implications for academic and managerial practice are
In The Knowledge-Creating Company (1995, pp. 6–7) Nonaka and Takeuchi claimed that the
emphasis western companies placed on managing knowledge had not been accompanied
by an understanding of how it is created. Nonaka proposed that organizational knowledge
is created through the continuous social interaction of tacit and explicit knowledge
involving four sequential modes of knowledge conversion: socialization, externalization,
combination and internalization, before returning once more to socialization. This
process is a ‘spiral’ one, a metaphor suggesting that each ‘circuit’ builds on the previous
one; knowledge creation is also, implicitly, knowledge accumulation (Nonaka, 1991a;
1994, pp. 15, 18; 1995; Nonaka and Takeuchi, 1995, pp. 56, 61–2, 71–2, 89, 237–8;
Nonaka and Toyama, 2003; Nonaka et al., 1994; 2001a, pp. 14–18). The process was
depicted by a matrix, sometimes called the SECI model, described as the ‘engine’ of the
entire knowledge creation process (Nonaka and Takeuchi, 1995, p. 57; see Figure 1).
Nonaka’s theory has achieved paradigmatic status since the mid-1990s. It has been
described as one of the best known and most influential models in knowledge strategy
literature (Choo and Bontis, 2002, p. ix) and as ‘highly respected’ (Easterby-Smith and
Address for reprints: Stephen Gourlay, Kingston Business School, Kingston University, Kingston Hill, Kingston
upon Thames KT2 7LB, UK (email@example.com).
© Blackwell Publishing Ltd 2006. Published by Blackwell Publishing, 9600 Garsington Road, Oxford, OX4 2DQ, UK
and 350 Main Street, Malden, MA 02148, USA.
Journal of Management Studies 43:7 November 2006
Lyles, 2003, p. 11). While other parts of the theory (Nonaka, 1994, pp. 20–35; Nonaka
and Takeuchi, 1995, pp. 70–90) have undergone considerable modification since the
1990s (Nonaka et al., 2001a, 2001b) the ‘engine’ remains a central element, recently
being described as the way firms synthesize contradictions (Nonaka and Toyama, 2003).
The theory appears to have attracted little systematic criticism, at least not in management
and organizational studies literature. The most far-reaching critique is in a
neglected paper by Essers and Schreinemakers (1997). They praised Nonaka for recognizing
that the capacity for corporate action depends on ideas and beliefs as much as on
scientific knowledge but concluded that his subjectivism tended towards a dangerous
relativism because he made justification a matter of managerial authority, and neglected
to consider how scientific criteria relate to corporate knowledge. Second, he failed
to recognize that the commitment of different groups to their ideas and the resulting
need to resolve this conflict by managerial authority cannot bode good for creativity
and innovation. Another comprehensive but neglected critique ( Jorna, 1998) charged
Nonaka with overlooking learning theory, earlier discussion of tacit and explicit knowledge,
with misreading important organizational writers, and of not using better accounts
of western philosophy. Bereiter (2002, pp. 175–9) argued Nonaka’s model does not
explain how new ideas are produced, nor how depth of understanding (necessary for
expertise) develops. Further, their model of knowledge work is unconvincing, and they
make collaborative work a mystery. These are not the only criticisms, but they are some
of the most comprehensive and serious.
Jorna’s critique centred on the neglect of previous research, while Essers and Schreinemakers,
and Bereiter, were largely concerned with consequences of the model. In the first
part of this paper the focus will be on evaluating Nonaka’s knowledge creation hypothesis,
the ‘engine’ of knowledge conversion/creation, and the associated concepts. It will
be argued that the evidence adduced in support of the modes of knowledge conversion
is either non-existent, anecdotal, or open to alternative explanations. More serious are
the conceptual weaknesses of the framework, in particular the omission of inherently
tacit knowledge, and the redefinition of ‘knowledge’ to mean managers’ beliefs about, for
example, the viability of new product ideas. Indeed, from this perspective, it appears
Nonaka argues that knowledge is created when managers decide something is knowledge
for the organization.
tacit to explicit
Figure 1. The ‘engine’ of knowledge creation (adapted from Nonaka and Takeuchi, 1995, pp. 62, 71)
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The second part of the paper turns to consider knowledge creation. Building on the
consensus that there are, roughly speaking, two types of knowledge (not corresponding
precisely to the categories tacit and explicit), it is argued that these correspond to Dewey’s
(1916) distinction between non-reflectional and reflective experiences. This leads to the
inference that different forms of knowledge are created as a consequence of, and implicated
in, different modes of experience/behaviour.
KNOWLEDGE CONVERSION: THE EVIDENCE
This section focuses on assessing the evidence cited in support of the four modes of
knowledge creation. For this purpose Nonaka’s central propositions about knowledge
creation processes are taken for granted. They will be examined in the next section.
Knowledge conversion, we are told, begins with the tacit acquisition of tacit knowledge
by people who do not have it from people who do. Nonaka distinguished technical tacit
knowledge (concrete know-how and skills) from cognitive tacit knowledge (mental
models of the world). The socialization of the former was illustrated by a story about the
development of a domestic bread-making machine, and of the latter with reports about
brainstorming camps, and customer interaction (Nonaka, 1994, p. 16; Nonaka and
Takeuchi, 1995, pp. 8, 60).
The first prototype bread-making machine failed to produce ‘tasty bread’ and as a
master chef could not tell the development team what they needed to know, a team
member apprenticed herself to him to learn the appropriate skills (Nonaka, 1991a, pp.
98–9; Nonaka and Takeuchi, 1995, pp. 63–4, 100–9). One day she ‘noticed the baker
was not only stretching but also “twisting” the dough, which turned out to be the secret
for making tasty bread’ (Nonaka and Takeuchi, 1995, p. 64). Here as elsewhere (Nonaka
and Takeuchi, 1995, p. 105) the taste of bread is the focus, but they also reported that
during this phase ‘the team had to resolve the problem of getting the machine to knead
the bread correctly’ (Nonaka and Takeuchi, 1995, p. 105). Whether taste or kneading
was at issue is important as it affects how we evaluate the data.
We are asked to take as evidence of socialization the engineers’ ability to make a
machine capable of baking tasty bread only after their apprenticeship to the chef where
one team member noticed an aspect of the kneading action. Subjectivity aside, the taste
of bread is influenced by the raw ingredients, the dough maturation process and by
baking (Barfield, 1947, pp. 95–8), but not by kneading. The taste problem was probably
solved incidentally during the lengthy development process when numerous other
changes were made. Misattribution of reasons for success is to be expected (Nisbett and
Wilson, 1977), and even affects scientists who by virtue of their training and values might
be expected to accurately report their achievements (see, e.g. Collins, 1974, 2001a). If, on
the other hand, the problem lay with kneading, although the description lacks sufficient
detail to be certain what the ‘twist’ actually refers to, noticing and replicating how the
chef manipulated the dough may well have been important. The bread machine study
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may thus provide evidence for the socialization of technical tacit knowledge, but this is
far from clear.
The stories of brainstorming camps, and customer interaction (Nonaka and Takeuchi,
1995, pp. 63–4; see also Nonaka, 1988a, p. 11; Nonaka and Kenney, 1991, p. 72) are too
insubstantial to evaluate, but a later study (Ichijo et al., 1998, pp. 173–203) appears to
illustrate cognitive tacit knowledge socialization. A manager explained that interaction
with customers was felt to be particularly important for product development: ‘We come
to understand what they [i.e. customers] want to do while talking with them about
various things’ by ‘. . . read[ing] into their thoughts and desires’ (Ichijo et al., 1998, pp.
184–5). As another manager said: ‘We come to see what our customers expect towards
the future while we listen, consider various problems and forecast upcoming changes
with them’ (Ichijo et al., 1998, p. 181).
It is difficult to accept these statements as evidence of anything other than the
managers’ beliefs about how they got ideas for new products. Had it been shown, by
using techniques like cognitive mapping (Fletcher and Huff, 1990) for example, that
customers tacitly held new product ideas, that they did not explicitly convey these to
managers, but that managers’ cognitive maps after talking with customers revealed
evidence of new ideas similar to those of the customers, then perhaps there might be
some justification in claiming that the socialization of tacit cognitive knowledge can
occur. No such evidence appears to have been produced.
Socialization is followed by externalization, the conversion of tacit into explicit knowledge
(Nonaka, 1994, p. 24; Nonaka and Takeuchi, 1995, p. 66), which was exemplified
by anecdotes about new product development. The Honda City case is the most detailed
and tells how after several false starts new ideas began flowing under the stimulus of the
phrase ‘Automobile Evolution’, eventually resulting in a new design. The other cases
appear to involve similar processes and evidence (Imai et al., 1985; Nonaka, 1988a,
pp. 9–12; 1990, p. 35; 1991a, pp. 100–1; Nonaka and Takeuchi, 1995, pp. 11–13,
69–70, 76–8, 86–7; see also Nonaka, 1988b; Nonaka and Kenney, 1991; Nonaka and
In using these cases to illustrate the externalization of tacit knowledge, Nonaka and his
colleagues make two important but implicit claims. First, that the designers’ ideas had
been held tacitly beforehand since it was their tacit knowledge that was externalized. No
evidence, such as might have been demonstrated through cognitive mapping, was
produced to support this. The second implicit claim is that externalization proceeds by
use of metaphor and analogy, a hypothesis proposed earlier by Nonaka (Nonaka, 1991b;
see also Nonaka and Takeuchi, 1995, pp. 66–7). Since this hypothesis is untested, and we
use metaphor and analogy in all our linguistic practices (Lakoff and Johnson, 1980) either
these cases do not illustrate externalization, or we are always externalizing whenever we
speak, and so no special process needs to be invoked.
Nonaka did not present evidence for the externalization of technical tacit knowledge
but the bread-machine case could be interpreted in this light: it seems likely that once the
engineers had learned how to knead bread they were able to ground the development
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and re-design of the prototype in this shared experience. Whether it makes sense to
conceptualize this in terms of the externalization of a tacit skill is a question explored
The interaction of explicit knowledge with explicit knowledge or ‘combination’ was
described as the process of ‘systematizing concepts into a knowledge system’ (Nonaka
and Takeuchi, 1995, p. 67). Nonaka’s examples include writing a report (Nonaka, 1991a,
p. 99); meetings, conversations, and exchange of documents (Nonaka, 1994, p. 19;
Nonaka and Takeuchi, 1995, p. 67); an MBA education (‘one of the best examples’;
Nonaka and Takeuchi, 1995, p. 67); ‘[m]odern computer systems’ (Nonaka, 1994, p. 19);
and the ‘embodiment’ of knowledge into products (Nonaka, 1991a, p. 99; Nonaka et al.,
1996, pp. 207–8).
Adler (1995, p. 111) suggested Nonaka’s claim that an MBA simply involves
exchange of explicit knowledge might be a ‘playful’ remark, the case study method
having been designed to help transmit tacit knowledge. Documents have been treated
as channels along which messages pass to the reader but this has long been criticized
as an inadequate model (e.g. Cherry, 1966). Computer functioning and knowledge
‘embodiment’ processes might well be viable candidates for a distinct ‘combination’
process, but as they have not been described, we cannot be certain. Ahituv (1987), for
example, identified the transformation of data/information from one medium to
another as a special aspect of information systems, and this might be what Nonaka
meant by ‘combination’. The lack of detail in any of these examples precludes further
Internalization, the conversion of explicit into tacit knowledge, is ‘closely related’ to ‘the
traditional notion of learning’, and to ‘learning by doing’ (Nonaka, 1994, p. 19; Nonaka
and Takeuchi, 1995, p. 69; Nonaka et al., 1994, pp. 340–1). Saying that internalization
is ‘closely related’ to learning implies it is distinct from learning while claiming that it is
‘triggered’ by learning-by-doing (Nonaka et al., 1996, p. 208) suggests learning causes
Nonaka and Takeuchi claimed that reading illustrates the process of cognitive tacit
knowledge internalization as readers re-experience writers’ experiences, thus transferring
tacit knowledge (Nonaka and Takeuchi, 1995, pp. 69–70). Given that they also suggest
that tacit knowledge arises from one’s own experiences (Nonaka and Takeuchi, 1995,
pp. 60–1) it is unclear how reading might generate tacit knowledge of what is being
read about. It should only generate tacit knowledge of reading and related processes. The
copious research into reading (e.g. Smith, 1994) appears not to provide any support for
their claim. They also suggested that internalization is exemplified by the case of workers
who discovered what working reduced annual hours felt like by working for a month at
the new rate (Nonaka and Takeuchi, 1995, pp. 70, 117–20). However, since the ability
to do without the ability to tell is typically held to be the primary form of evidence for tacit
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knowledge, the evidential status of feelings is unclear. Internalization, as the acquisition
of tacit knowledge from explicit knowledge, appears difficult to illustrate, and their
examples are not convincing.
The Evidence Reconsidered
We therefore only appear to have reasonably good evidence for the socialization and
externalization of technical tacit knowledge, provided by the bread-making study.
However, this evidence can be interpreted more simply than in terms of interacting
knowledge forms. First there is no need to suggest that when someone learns under the
guidance of an expert that some indescribable kind of knowledge is ‘transferred’ by an
unknown process. People regularly learn new skills without direct personal contact with
an expert which testifies to the centrality of learning-by-doing for acquiring skills. An
expert’s role may often be to constrain novices’ freedom of action such that they develop
the appropriate skills (Tsoukas, 2003, p. 424; Williams et al., 1999, p. 337), or to provide
exemplary behaviour that the novice unconsciously imitates, a process explicable in
terms of action perception processes (see Handley et al., 2006; Roberts, 2006; Schaal
et al., 2003; Wohlschläger et al., 2003).
As for externalization, Nonaka’s emphasis on figures of speech suggests it is a linguistic
process through which, mysteriously, tacit knowledge becomes explicit. A report of an
apparently identical process amongst scientists (Collins, 2001a) suggests active exploration
and experimentation rather than metaphor laden talk were the critical factors.
Much experimentation apparently took place during prototyping of the bread machine
(Nonaka and Takeuchi, 1995, pp. 104–7), but the role of these activities in the development
of the machine was not reported.
The engineers’ success might simply reflect a process of task design typical of modern
organizations. Collins and Kusch’s (1998) distinction between mimeomorphic and polimorphic
tasks is helpful here. Mimeomorphic tasks are by definition machine-like. They
admit of only one way of execution and their description will match the way the task was
performed by people. Polimorphic tasks, in contrast, nearly always must be done in
various ways, and any description is unlikely to match the kinds of input made by
humans (Collins and Kusch, 1998). Practices such as bread-making are a mix of polimorphic
and mimeomorphic tasks – kneading large quantities of dough by machine, for
example, was commonplace in 1940s Britain, but the overall process still retained many
craft elements (Barfield, 1947).
In competitive economies, the set of tasks of any practice are often reorganized by
transforming polimorphic tasks into more mimeomorphic ones, otherwise known as
deskilling (Davids and Myers, 1990; Thompson, 1983). The bread-machine designers
aimed to make a commercially viable machine that customers would feel made bread like
that prepared by a chef. Their interest in the chef’s polimorphic bread-making tasks,
skills and associated tacit knowledge was marginally instrumental to solving an engineering
problem that entailed designing a new bread production process. Within limits due
to bread chemistry, for example (and to the extent they did not modify that), the
knowledge required to produce bread in the machine was quite different from that of the
craft baker. Bereiter (2002, p. 177) pointed out that observation and attempted mimicry
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of birds did not enable us to fly; that required transformation of the problem. By analogy,
the bread-machine designers did not ‘externalize’ the chef’s bread-making knowledge
into their machine; they transformed the problem into one that could be handled by a
particular kind of machine. It is therefore not necessary to postulate tacit-to-tacit and
tacit-to-explicit knowledge transformations when we can more simply refer to learning
by doing on the one hand, and to designing new tasks on the other.
Nonaka and his colleagues’ attempt to provide a straightforward useable theory of
knowledge creation was an ambitious one, and we should not be too surprised at
difficulties like these. They are perhaps partly due to the derivation of the model from
studies of information creation and innovation (Imai et al., 1985; Nonaka, 1988a, 1988b,
1990, 1991a; Nonaka and Kenney, 1991; Nonaka and Yamanouchi, 1989) rather than
from empirical studies of organizational knowledge processes. Reinterpretation of old
data is of course a valid method, but it might well also constrain new theory development.
Nonaka called for more research to validate the modes, and the ‘spiral’ sequence
(Nonaka et al., 1994, p. 350), work that on the whole still remains to be done. Research
along some of the lines indicated above may well validate the ideas of socialization and
externalization. However, there are more fundamental difficulties with the matrix concerning
the conceptual framework.
NONAKA’S CONCEPTUAL FRAMEWORK: CRACKS IN THE ‘ENGINE’?
The existence of conceptual difficulties has already been hinted at in the foregoing
discussion, particularly of combination and internalization. Both these processes are
described as comprising a number of otherwise distinct activities, two of which (reading
and writing) are common to both. What unites these otherwise disparate activities to
qualify them as either (or both) combination or internalization is not made clear in
principle, or through the examples. This unexplained empirical heterogeneity, together
with the introduction of a new aspect, feelings, suggests a lack of conceptual clarity.
Furthermore, if tacit knowledge is the source of new knowledge (itself an unsubstantiated
claim) it is not clear why knowledge conversion has to begin with socialization.
New tacit knowledge is also generated by internalization, so we are told, and if reading
and writing are both instrumental in tacit knowledge formation, then knowledge creation
might also begin with the creative synthesis of explicit knowledge (‘combination’). Externalization
too could form a starting point since all that is required is that some ‘source’
activity, and thus associated tacit knowledge, already exists. Finally, it is evident that
Nonaka only proposed two modes of knowledge conversion, tacit to explicit, and explicit to
tacit. Socialization and combination, however, are modes of knowledge transfer, the
former concerning how one person or group acquires the tacit knowledge of others, and
the latter the transfer of already existing explicit knowledge between containers (people,
That these difficulties hint at the existence of deeper conceptual problems becomes
clear when we consider key aspects of Nonaka’s conceptual framework directly. He
claimed that knowledge is created through the interaction of tacit and explicit knowledge.
Three concepts, tacit knowledge, explicit knowledge, and knowledge (and their
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interrelationships) are thus central to his theory, which will now be examined in more
Tacit and Explicit Knowledge
Nonaka attributed the concepts of tacit and explicit knowledge to Polanyi. Tacit
knowledge is subjective, bodily, of the here and now, and practice-based, while explicit
knowledge is objective, of the mind, and the there and then, and concerned with theory
(Nonaka and Takeuchi, 1995, pp. 59, 61; see also Nonaka, 1994, p. 16). Tacit knowledge
is difficult to communicate or share, but, they claimed, is a ‘rich untapped source of new
knowledge’ (Nonaka, 1994, p. 16; Nonaka and Takeuchi, 1995, pp. 8, 59–60, 72, 85;
Nonaka et al., 2001a, p. 15). Nonaka distinguished technical from cognitive tacit knowledge
to give Polanyi’s ideas a more ‘practical’ aspect (Nonaka, 1994, p. 16; Nonaka and
Takeuchi, 1995, p. 60), a puzzling move given their critique of dualist thought (Nonaka
and Takeuchi, 1995, pp. 25–32).
Citing the authority of Polanyi for ‘tacit knowledge’ causes difficulties since Polanyi
used ‘knowledge’ to mean a process, ‘knowing’, not an object (Gourlay, 2004). Even so, his
phrasing is sometimes ambiguous as when he wrote that ‘explicit knowledge must rely
on being tacitly understood’ (Polanyi, 1969, p. 144), a quotation that underlines the
argument that for Polanyi there is always an irreducibly tacit aspect to any explicit
knowledge/knowing (Adler, 1995; Gourlay, 2004; Tsoukas, 2003).
Nonaka and his colleagues are not alone in holding that tacit knowledge can be
converted to explicit knowledge, or, that whatever remains is trivial (e.g. Boiral, 2002,
p. 296; Spender, 1996, p. 58; Torff, 1999, p. 195; Wagner and Sternberg, 1986). Others,
however, claim with equal conviction that at least some tacit knowledge cannot be made
explicit (e.g. Ambrosini and Bowman, 2001, pp. 812–13; Collins, 2001a, p. 72; Herbig
and Büssing, 2003, p. 167; Patel et al., 1999, p. 76; Tsoukas, 2003, p. 425). Collins
(2001b), while deliberately conceding much of the debate to those who believe tacit
knowledge can be explicated, argued that the ‘forms of life’ by and through which we
conduct our social practices cannot be made explicit, and thus remain a underlying
tacitly known component (see also Janik, 1988; Tsoukas, 2003; Tsoukas and Vladimirou,
2001). A model of knowledge creation processes that begins with tacit knowledge must
therefore account in some way for both inherently and contingently tacit knowledge, an
issue that needs addressing if Nonaka’s hypothesis about knowledge creation is to be
Explicit Knowledge, and Knowledge
Nonaka and his colleagues’ distinction between explicit knowledge, and knowledge,
raises further conceptual difficulties. They say that explicit knowledge is another name
for declarative knowledge (Nonaka, 1994, p. 18; Nonaka and Takeuchi, 1995, p. 61) but
declarative, explicit and propositional are simply names used by different disciplines for
the same conceptual object (Sahdra and Thagard, 2003, pp. 478–9). Moreover, ‘propositional
knowledge’, as used by epistemologists, means knowledge as ‘true, warranted
belief’(Klein, 1998). We might therefore conclude Nonaka proposed that new (explicit)
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knowledge is created by the interaction of tacit knowledge and previously created
(explicit) knowledge but Nonaka and his colleagues would not agree.
Their claim to have adopted the definition of knowledge as ‘justified true belief’
(Nonaka, 1994, p. 15; Nonaka and Takeuchi, 1995, p. 58) is misleading. Nonaka did say
he had modified this definition considerably but he did not draw out the full implications
of his modifications. He claimed that ‘for present purposes it is important to consider
knowledge as a personal “belief”, and to emphasize the importance of the “justification”
of knowledge’ (Nonaka, 1994, p. 15), a ‘critical’ distinction because ‘traditional epistemology
emphasizes the absolute, static, and nonhuman nature of knowledge’ (Nonaka
and Takeuchi, 1995, p. 58; Nonaka et al., 2001a, pp. 14–15). Regardless of the merits
of this view it is not clear why this should be a problem except that if we assume
knowledge is absolute and static the question of managing its creation can hardly be
The consequences of Nonaka and his colleagues’ cavalier dismissal of ‘traditional
epistemology’ become clear in the light of their discussion of justification, ‘the process
of determining if the newly created concepts are truly worthwhile for the organization’
(Nonaka, 1994, p. 26; Nonaka and Takeuchi, 1995, p. 86). This clearly, and solely,
involves the evaluation by managers of new ideas against pre-defined criteria (Nonaka,
1994, p. 26; Nonaka and Takeuchi, 1995, pp. 86, 103, 108–9). Thus the first prototype
bread-making machine failed to be ‘justified against the original product concept’
because it did not make tasty bread. Even when this problem had been rectified the
idea remained unjustified because it failed to meet cost criteria (Nonaka and Takeuchi,
1995, pp. 103–8). Moreover, since these criteria were ‘standards for judging truthfulness’
(Nonaka, 1994, p. 26), Nonaka appears to say that if beliefs are justified in this sense, then
they are also true. In so far as justification can be based on false premises (Klein, 1998,
p. 268), a ‘justified belief’ may well be wrong. The practical implications of this move,
however, are straightforward: ‘knowledge’ as ‘justified belief’ in Nonaka’s framework
simply means ideas and plans that have been sanctioned by managers. Knowledge and
explicit knowledge are therefore quite different concepts for Nonaka.
In this light it is clear that for Nonaka and his colleagues ‘knowledge’ means that
fraction of warranted beliefs about processes and their associated facts that passes
through the filter of managerial evaluation of what is and is not practicable for the
organization. Such processes have been widely discussed in decision-making research
(Bazerman, 1998) and it appears the matrix concerns decision making rather than
knowledge creation. Nonaka’s emphasis on the importance of personal commitment to
knowledge processes (Nonaka, 1994, pp. 17–18; Nonaka and Takeuchi, 1995, pp. 58–9)
also makes sense in this context. No amount of personal commitment to a belief that the
taste of bread is influenced by a ‘twist’ can change the chemistry of baking, nor would it
suffice when it comes to improving the design. On the other hand, personal commitment
to a belief that a particular design will be commercially viable, and does meet previously
specified criteria, is probably vital to success in battles over organizational priorities.
There can be no objection to distinguishing managers’ reasoned beliefs about the
viability of new product or process ideas from evidence about, for example, how breadmaking
might be mechanized on a domestic scale. Calling both ‘knowledge’, and in
particular discussing the former in the language of epistemology risks confounding the
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distinction, however, and thus confusing discussion about the creation and management
of knowledge in organizations. Beliefs are of course important, and a theory of knowledge
management might even encompass them, but a realistic model of knowledge
creation must also account for the production of scientific type knowledge which is after
all the foundation of our ability to control material and other processes.
Nonaka and his colleagues’ conceptual framework omits inherently tacit knowledge,
and adopts a radically subjective definition of knowledge (Essers and Schreinemakers,
1997), focusing on the content of managers’ decisions, and entirely omitting more
scientific forms. These shortcomings are so fundamental that there is little point in
considering their claim that knowledge is created through the social interaction of tacit
and explicit knowledge. Indeed, their model clearly indicates that knowledge as they
define it is primarily created by managerial decision. In so far as the matrix continues to
figure in Nonaka and his colleagues’ later model (e.g. Nonaka and Toyama, 2003) that
too may be in need of revision, an issue beyond the scope of this paper. Instead we will
focus on the important question of how we might conceptualize knowledge creation
better, and whether or not it might be managed.
KNOWLEDGE CREATION – TOWARDS A NEW FRAMEWORK
Nonaka’s suggestion to take knowledge creation seriously (e.g. Nonaka and Takeuchi,
1995) is a good one since if we understand how something is made we are in a better
position to manage it than by dealing only with the symptoms of some underlying
process. The remainder of this paper will attempt to address some of the issues this task
involves, beginning with a brief review of what we might mean by ‘knowledge’. It will be
argued that the widespread distinction between two kinds of knowledge (roughly, tacit
and explicit) reflects a distinction between two broad kinds of behaviour, one of which
appears difficult but perhaps not impossible to manage, the other being perhaps better
Knowledge: A ‘Tricky’ Concept
Alvesson and Kärreman (2001, pp. 997–1012) argued that use of ‘knowledge’ in
management literature suffers from five problems: ontological incoherence; vagueness;
breadth, and hence conceptual emptiness; tensions between regarding it as objective,
and evidence of its subjectivity; and functionalism. They concluded that knowledge is a
loose, ambiguous, and rich concept that precludes reduction to simple sets of distinctions
(see also Blackler, 2002, p. 54; Wilson, 2002), implicitly endorsing the conclusion reached
half a century earlier that knowledge is one of those ‘ “vague words” one is at times
compelled to use’, ‘a “loose name” that has been used to refer to a great many often
different things’ (Dewey and Bentley, 1949, pp. 48, 78).
The situation has not improved since the 1940s. While Bentley noted that at least
knowledge was connected with ‘living organisms’ (Ratner and Altman, 1964, p. 459)
more recently it is said to be embedded/embodied in ‘technology’ (Argote and Darr,
2000, p. 53), in documents, repositories, organizational routines, practices and norms,
(Davenport and Prusak, 1998, quoted in Alvesson and Kärreman, 2001, pp. 998–9), and
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in the ‘physical structure of the workplace’ (Argote and Ingram, 2000, p. 152). Knowledge
is indeed a ‘tricky’ concept (Tsoukas and Vladimirou, 2001, p. 975)! We can,
nevertheless, examine some ways in which the concept has been used to see whether
these help us to conceptualize ‘knowledge creation’.
Discussion of knowledge traditionally begins with philosophy but as knowledge management
implies an alternative paradigmatic conception (Essers and Schreinemakers,
1997) it is probably better to begin elsewhere. Indeed, as Nonaka and Takeuchi apparently
implied, the ‘traditional’ western view effectively prohibited questions about knowledge
creation since knowledge was assumed to exist either in the environment, or in the
organism (see e.g. Richardson, 1998). We will begin by reviewing discussion linking
knowledge with information, since this has traditionally informed knowledge management,
before proceeding to consider the implications of several knowledge typologies.
Knowledge is Transformed Information?
This theme is evident in various formulations about knowledge. Nonaka and his colleagues
described knowledge as ‘a meaningful set of information’ (Nonaka and Takeuchi,
1995, pp. 58–9; Nonaka et al., 1996, p. 205); Myers (1996, p. 2) called organizational
knowledge ‘processed information’; and Davenport et al. (1998, p. 43) described knowledge
as ‘information combined with experience, context, interpretation and reflection
. . . a high-value form of information . . . ’. Different versions of this ‘value chain’
model (Shin et al., 2001, p. 336) exist but all place knowledge above information
(Bouthillier and Shearer, 2002; Liang, 1994; Tuomi, 1999).
This suggests that knowledge is created through the transformation of information but
no account is given of how information is ‘constituted’, ‘processed’, or ‘combined’ to
yield knowledge or how it acquires ‘high value’. Such processes imply the activity of a
cognitive system (Garavelli et al., 2002, p. 271), but this is usually treated as some kind
of inert machinery, a view perhaps in keeping with the widespread assumption that
information is value-free (Day, 2000). Another difficulty is that regardless of whether
information is value-laden or value-free, the word is used in a variety of ways, depending
on the level of analysis (Stamper, 1996). Finally, Tuomi (1999) has convincingly argued
that knowledge is needed to specify data: the hierarchy can be inverted and still make
sense! Treatments of knowledge in terms of information are thus fraught with conceptual
difficulties. The fact that ‘information’ and ‘knowledge’ are often used interchangeably
(Bouthillier and Shearer, 2002; Shin et al. 2001, p. 336) and that there is little to
distinguish knowledge management from information management (Wilson, 2002),
provides further evidence of confusion, and suggests this approach currently offers little
support to hypotheses about knowledge creation.
Knowledge and Knowledge Types
The idea that there are roughly two distinct kinds of knowledge is widely accepted. In
knowledge management, the labels tacit and explicit are chiefly used, but other disciplines
use different names (Table I). Here, Sahdra and Thagard’s (2003, p. 479) labels
have been used.
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‘Knowledge-how’ covers knowledge that is situated or context dependent in so far as
it does not appear meaningful to consider it as ‘knowledge’ apart from someone who
knows and the situation in which they act. Other terms include process (Shin et al., 2001,
p. 339), or processual knowledge (Kakihara and Sørensen, 2002, pp. 51–4). Included
here are Gherardi and Nicolini’s (2000, pp. 330–3) ‘social-material constructionist
approach’; connectionist and autopoietic perspectives (Smith and Samuelson, 2003;
Venzin et al., 1998; von Krogh et al., 1996); and, since practices are social processes, the
‘forms of life’ approach (Collins, 2001b; Tsoukas, 2003; Tsoukas and Vladimirou, 2001).
Cook and Brown’s action oriented ‘epistemology of practice’ (1999, p. 382), Blackler’s
emphasis on ‘knowing’ linked with situated practices as distinct from ‘knowledge’ (2002,
pp. 51, 54–6), and situated cognition (Clancey, 1997a) can also be placed here.
Knowledge-how perspectives are diverse, covering knowledge as interpretation,
knowledge as process, and knowledge as relationship (Kakihara and Sørensen, 2002, pp.
51–4) and while this heterogeneity would elsewhere warrant emphasizing distinctions,
from the perspective of knowledge creation their context dependency unites them. These
perspectives are also largely anti-representationistic viewing knowledge as not representable
(or, not meaningfully representable) in symbolic form. Knowledge-how is not simply
another name for tacit knowledge since it also covers in particular that explicit knowledge
where context is critical to give it meaning, and where there is contextual variability
in meanings attributed to the ‘same’ explicit knowledge.
The knowledge-that category covers knowledge in symbolic forms existing independently
of individual knowers; it could be labelled ‘decontextualized knowledge’ and is
all explicit in form. Kakihara and Sørensen (2002) called it the knowledge as object
approach, and it has clear affinities with the ‘traditional’ approach to knowledge
(Blackler, 2002, pp. 48–54). An important feature, neatly captured in Cook and Brown’s
phrase the ‘epistemology of possession’ (1999, p. 382), is that knowledge that is held to be
‘in’ something, an approach consistent with the ‘representationistic’ (Kakihara and
Table I. Knowledge types and names
Discipline Knowledge-how Knowledge-that
Philosophy1 Knowledge-how; procedural
Philosophy (Polanyi)2 Tacit knowing Explicit knowledge
Psychology1 Implicit knowledge; tacit abilities; skills Explicit knowledge; declarative
Artificial intelligence1 Procedural knowledge Declarative knowledge
Neuroscience3 Covert knowledge Overt knowledge
Tacit knowledge Explicit knowledge
IT studies6 Knowledge as process Knowledge as object
Knowledge management7 Know-how Know-what
Sociology of science8 Tacit; encultured (forms of life) Explicit/symbolic
Source: 1 Sahdra and Thagard (2003, p. 479); 2 Gourlay (2004); 3 Weiskrantz (1997, p. 256); 4 Nonaka and Takeuchi
(1995); 5 Alexander et al. (1991); 6 Kakihara and Sørensen (2002); 7 Whitehill (1997); 8 Collins (1993, 2001b).
S. Gourlay 1426
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Sørensen, 2002, p. 50) assumption that organisms have internal states carrying representations
of salient parts of their environment (Bechtel, 1998; see also Clancey, 1997b,
pp. 250–3). This assumption is widespread in knowledge management discourse where
knowledge is said to be ‘embedded’ in ‘repositories’ (individuals, roles and structures,
organizational practices, culture, and the physical structure of the workplace) or ‘reservoirs’
(organization members, tools, and tasks, and combinations of these three elements)
(Argote and Ingram, 2000, pp. 152–3) or ‘materialized’ into ‘knowledge object[s]’, such
as documents (Garavelli et al., 2002, p. 270).
The Everyday Life-World and Reflective Experience
So far we have considered knowledge, and a typology of knowledge types. To link this
to knowledge creation, implicitly some kind of act, we have to shift the focus to what
metaphorically lies behind or under these types. To do so we draw on an important
distinction made by Dewey and later by Schutz.
Dewey proposed to distinguish between non-reflectional experiences, characteristic of
our everyday living, and reflective experiences, typical of the professional behaviour of
philosophers, or scientists (Dewey, 1916). Dewey’s non-reflectional experience has clear
parallels with Schutz’ notion of the everyday life-world wherein we act unreflectively
(Schutz and Luckmann, 1974, p. 3). Thus knowledge-how, or knowing (to stress its
processual aspect), is characteristic of the everyday life-world. Knowledge-that, on the
other hand, ‘knowledge of and about things, knowledge that things are thus and so’ is
created by processes of ‘reflection and conscious appreciation’ (Dewey, 1930, p. 178; see
also Dewey, 1916, pp. 4, 12–13, 17–21), a specific kind of experiencing and activity.
Words like ‘reflection’ and ‘theorizing’ might be held to imply primarily linguistic
processes akin to Nonaka’s externalization but the intention here, drawing on Dewey
(1916, pp. 13–14), is that reflection covers the whole action-reflection-action cycle and
not just its cerebral aspect. Thus while the immediate product of reflective activity may
be communicable mappings (Holzner, 1972, p. 9) of those events that were the focus of
reflection, such products are also typically an intermediate step in a process of seeking
greater control over what has been reflected on.
The tacit knowledge fraction of know-how appears to be created in at least three ways.
First it may be innate or due to instinct. Dewey noted that knowing how was an
‘outgrowth of unlearned activities which are part of man’s endowment at birth’ (Dewey,
1930, p. 89) and Torff (1999, p. 195) regarded innate predispositions as a particularly
recalcitrant form of tacit knowledge. The idea of innate knowledge need not imply
nativism or biological determinism since what appears as innate depends on particular
organism–environment developmental conditions for its formation (Gottlieb,
2001).Tacit knowledge can also be acquired without awareness through implicit learning
(e.g. Berry and Dienes, 1993). Finally, important aspects of expertise are exercised tacitly
but were learned explicitly, and if experts’ normal decision-making is disrupted they can
‘recall’ the relevant explicit knowledge (Ambrosini and Bowman, 2001; Lindkvist, 2005;
Patel et al., 1999).
It is often held, largely following Polanyi, that tacit knowledge is ‘personal’ and
therefore implicitly private. While we are each clearly in some respects unique, implying
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individually specific knowledge underpins our behaviour, in so far as we engage in
practices, thus ‘acting in ways similar to others, with a view to achieving states of affairs
which others also attempt to achieve, and using the same type of resource . . . to achieve
that type of end’ (Harris, 1980, p. 29; quoted in Reed, 1985, p. 119). Then ‘individual’
tacit knowledge is simultaneously ‘collective’ at least to the extent of being shared ‘forms
of life’ (Collins, 2001b; Tsoukas, 2003). Neuropsychological and anthropological models
(Frith and Wolpert, 2003; Strauss and Quinn, 1997) help us understand how such
‘sharing’ is possible without conscious awareness or intent on the actors’ part, and
without invoking mysterious tacit knowing processes.
The explicit fraction of know-how is simply that of our everyday life-world language;
our readily articulable commonsense beliefs that are at hand in any situation. These can
often be elaborated – we can answer questions as to why we do something, but typically
in the everyday life-world there is a limit beyond which we cannot go without slipping
over into reflective activity. This appears to be what reference to our ‘forms of life’
(Collins, 2001b) means. As we move from the everyday life-world into that of reflective
activity these cognitive limits, while remaining at some level, can be selectively pushed
back. An astronomer, like the rest of us, knows that the sun rises every day, but in her
professional life, knows this is an illusion yet accepts (and may even be unaware) that
her calculations relating to astronomical phenomena rests on yet other unexamined
Moving further, so to speak, into the reflective world(s) we find that a defining
characteristic of, for example, scientific work is that the methods whereby knowledge is
created are themselves explicit and open to question. While scientists cannot escape the
psychological and sociological constraints of human decision making on the knowledge
they produce (Bechtel and Richardson, 1993; Collins, 1974, 2001a, 2001b), their
methods can be described, reflected upon and improved, and within the kinds of local
limits described by research into scientific practices (Collins, 1974, 2001a), replicated by
others. Such knowledge, whatever its limits, is thus often more reliable, as well as more
likely to be systematically corrected, than that of the everyday life-world.
From this perspective it is clear that knowledge is not created by some relation (or
‘interaction’) between two kinds of knowledge but through human activities or practices
in general, on the one hand, and through a specific sub-set of practices (‘theorizing is one
practice amongst others’ (Ryle, 1963, p. 27)) on the other. There is thus no opposition
between the two, nor any need to assimilate one to the other; explicit knowledge is not
‘externalized’ tacit knowledge, but representations of abstractions from ongoing practices
that appear salient to their understanding and the exercise of control over them, as well
as useful for communicating with others.
Managing Knowledge Creation
It would appear that much know-how, especially aspects of tacit knowledge, may be
beyond overt control, and thus management in an active sense. Instinct, as well as
experiences that shaped someone’s tacit knowledge before they enter into a specific
employment relationship, are beyond the capacity of managers to influence directly. Of
course, some experiences such as formal schooling, for example, partly function to
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inculcate work relevant tacit knowledge, and managers’ actions can influence its reproduction
in the workplace. In so far as tacit knowledge is created and maintained by
ongoing experiences, managing cannot avoid influencing it as a consequence of implicit
(Berry and Dienes, 1993) or incidental and informal (Garrick, 1998) learning processes.
Decisions taken for one good (managerial) reason may have negative consequences for
tacit knowledge. As Lado and Wilson (1994, p. 175) noted, Taylorized work practices can
‘inhibit the development of transformational competencies by promoting and reinforcing
organizational “defensive routines” ’. Perhaps exercising ‘care’ (von Krogh, 1998) may
help to avoid such consequences, but as Popper and Lipshitz’s (1998) review of psychological
and sociological processes affecting learning at work shows, these are undoubtedly
very complex. The issue of consciously influencing others’ unconscious behaviours also
raises important ethical questions. In so far as expertise develops through repeated
exposure to similar problems, given prior explicit training, this type of tacit knowledge
may be the easiest to manage. Accepting that tacit knowledge is created all the time,
being shaped by people’s experiences, should at least encourage the recognition that
decisions taken for ostensibly good explicit reasons may have unintended and undesirable
consequences that we should seek to inquire into before committing ourselves to
Managing explicit knowledge – both that which is part of knowledge-how and more
particularly that which comprises knowledge-that – requires us to consider on the one
hand to what extent common-sense processes of thinking and acting can be managed,
and on the other, whether more systematic (scientific-type) methods can be used in
organizations, and if so, how they can be managed effectively. The idea of questioning
and thus to a degree managing common-sense processes is not a new one, having been
addressed in terms of developing awareness of theory-in-use, and of seeking to modify it.
It is, however, extremely difficult, and there is debate as to how far it is possible, or
desirable, and whether or not it is compatible with other managerial objectives (Argyris
and Schön, 1974; Friedman et al., 2001; Gray, 1996). This issue has obvious affinities
with considering the potential unintended consequences of decisions referred to above.
In so far as organizations conduct more formal scientific-type research, this kind of
knowledge creation process has been managed for some time. Whether it is managed as
effectively as it could be is another issue, and doubtless this area could benefit from
drawing on, for example, studies of scientific and technical practices (Barley and Orr,
1997; Collins, 1974, 2001a).
As regards consciously influencing (and thus managing) both commonsense and
scientific knowledge creation processes, it is interesting to note that the presence of
informed outsiders appears useful if not critical. Indeed, if one of the defining features of
the forms of life constraint on explicit knowledge is that the participants in a practice
typically are unaware of the presuppositions on which those practices depend, then the
presence of outsiders is likely to be critical to making such assumptions explicit. The
breakthrough in the bread-machine design was attributed to a software engineer who
was not part of the engineering team as such (Nonaka and Takeuchi, 1995, p. 104). In
Collins’ study of sapphire quality measurement (2001a), it took the collaborative efforts
of Russian and British scientists several days to identify the precise importance of specific
aspects of the Russians’ practices. The software engineer, and the British scientists, were
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both informed participants (they understood important aspects of the processes) but were
outsiders, not being full members of the practices central to the problem at hand in each
case. The role of psychologists in drawing up a tool to help managers become aware of
the tacit assumptions on which they base important decisions (Wagner and Sternberg,
1986), as of outsiders for raising awareness of theories-in-use (Argyris and Schön, 1974),
also testifies to the critical role of informed outsiders.
Nonaka’s proposition that knowledge is created through the interaction of tacit and
explicit knowledge via four knowledge conversion processes has been found wanting on
empirical and conceptual grounds. The bread-machine study provides the only evidence
that warrants serious attention, and could be interpreted as showing evidence for both
socialization, and externalization. However, the evidence is also open to alternative
explanations that do not require us to explain the events in terms of interaction between
forms of knowledge. Combination, and internalization, in particular, appear to be
ambiguous notions, while knowledge conversion has been conflated with knowledge
transfer in the matrix.
The underlying theory rests on a unidimensional view of tacit knowledge, ignoring
views that tacit knowledge may be at least partially if not wholly inherently tacit. The
distinction between explicit knowledge and knowledge seems unclear, until on examination
it is evident that Nonaka and his colleagues have redefined knowledge to mean
‘justified belief’. This is more than simply a contraction of the traditional (western)
epistemological definition of knowledge, since it refers specifically to managers’ beliefs,
justified with respect to prior strategic decisions, and to forecasts. ‘Knowledge’ concerning,
for example, certainties about how to control things to effect desired goals (such as
making tasty bread) remains unaccounted for in this model. It is therefore less a model
or theory of knowledge creation through knowledge conversion, than one concerning
In so far as ‘knowledge’ is an important factor in contemporary societies and organizations,
and on the assumption that it is created in some sense, then clearly it is worth
developing an understanding of such processes. It is notoriously difficult to define
‘knowledge’ satisfactorily, but, building on the widespread distinction between two forms
or types of knowledge, a broad approach was outlined. It should be noted that the two
forms emphasized in this paper, labelled know-how and know-that, do not correspond
simply to tacit and explicit knowledge since the former includes knowledge of which the
knowers can and do tell and are consciously aware of. The utility of this distinction lies
in that, building on ideas from Dewey and Schutz, we can propose that corresponding
to these two apparent forms of knowledge are two modes of behaviour.
On the one hand we have the everyday life-world (Schutz and Luckmann, 1974), the
world of non-reflectional experience (Dewey, 1916) wherein we act in a non-reflectional
manner; we simply get on with living, acting both consciously and unconsciously with
respect to the objects of our conscious (and unconscious) attention. We typically do not
think about how we are acting. On the other hand we have the world of reflective
experience (Dewey, 1916), phases of activity characterized by the conscious intent and
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attempt to analyse and describe some other experience or observed events with a view to
communicating something to others, and perhaps for controlling those events. The work
of scientists, loosely put, is a prime example of the latter type of behaviour.
The proposition then is that it seems useful to regard the two forms of knowledge as
consequences (and also, to a degree, components) of two general modes of behaviour.
Knowledge, on this account, is, and can perhaps only be, managed indirectly, through
managing behaviour. In so far as know-how is a consequence/component of everyday
behaving, any steps to influence the latter will affect know-how. Such techniques already
exist and are used in, for example, sports coaching (Williams et al., 1999); they perhaps
underpin some language teaching methods. Whether or not it is possible, let alone
desirable, that we should consciously be able to structure someone’s organizational
everyday life-world such that they ‘acquire’ certain know-how is a matter for further
debate and research. On the other hand we appear to know far more about how to guide
and manage more explicitly reflectional processes. The whole field of research methodologies,
for example, is concerned with how to conduct our behaviour vis-à-vis certain
kinds of research objects, usually, but not always, with a view to obtaining intersubjective
agreement amongst researchers about those objects. Studies of scientific and
other reflectional work are also to hand.
The broad implications for practice, both managerial and academic, of this hypothesis
are clear. They are that know-how is influenced by all the actions we undertake. Whether
it can be managed, in the sense that we ourselves, or someone else, can overtly influence
know-how, is more difficult to determine. Good managers will be well aware that
changing one aspect or condition of work often has adverse consequences for other
aspects of behaviour. In so far as these are well-known and documented, they should
perhaps be taken more seriously into account as having potentially adverse consequences
for otherwise valuable know-how. Academics might take up the synthesis of what we
already know about unplanned consequences of managerial actions, and formulate a
research programme to develop this area. While non-reflectional behaviour goes on in
every organization, of necessity, reflectional activities may not. Scientific work is often
divorced from areas of its application, and is thus managed independently. But in so far
as employees in any organization may, and may need, to reflect on what they are actually
doing, they may derive assistance from formal research methodologies instead of relying
on intuition. Academic research could also perhaps fruitfully consider to what extent and
how reflective activity can become part and parcel of typical managerial work.
*I would like to thank the editors, Professor Harry Collins, Andy Nurse, and three anonymous reviewers for
their valuable comments on earlier drafts of this paper. Versions of it have been aired at Warwick University,
Kingston University, and Copenhagen Business School – I am grateful to students and staff at those
institutions for their comments. Errors of omission or commission remain my responsibility.
 The theory appears originally to have been developed by Nonaka (e.g. Nonaka, 1991a, 1991b, 1994)
and subsequently presented in several collaborative publications (e.g. Nonaka and Takeuchi, 1995;
Nonaka et al., 1994). Here ‘Nonaka’ and ‘Nonaka and his colleagues’ will be used interchangeably
except where it is necessary to be more precise.
 Nonaka (1994) was cited 543 times, and Nonaka and Takeuchi (1995), 1093 times between 1994 and
June 2004. The number of citations has increased year on year, as has the range of categories of journals
Conceptualizing Knowledge Creation 1431
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in which this publication has been cited (source: ISI Citation Indexes; searched June 2004). Of course
citations are made for many reasons, but this level of interest indicates these are considered very
 The volume of citations of their work (see Note 2) makes it difficult to be certain that all significant
criticisms of their model have been identified. For this paper, abstracts of citations of Nonaka and
Takeuchi (1995) were searched extensively for terms indicative of criticism or significant amendment:
only six were found. Further criticism may have been published in edited volumes which are typically
not indexed. However, had systematic criticism been published it would surely have been cited, and its
absence, and the fact that no further suggestions were made during the refereeing process, suggests that
none has yet appeared.
 For additional criticism of details, see in particular, Becerra-Fernandez and Sabherwal (2001); Poell and
van der Krogt (2003); Engeström (1999, pp. 380, 388–90); Griffin et al. (1999); Hildreth and Kimble,
(2002); McAdam and McCreedy (1999, p. 96); Stacey, (2001, p. 35); and Yolles (2000).
 Since justification can be based on false premises, epistemologists now prefer to define knowledge as
‘true, warranted, belief’ rather than ‘justified true belief’ (Klein, 1998, p. 268).
 They also proposed considering ‘knowledge as a dynamic human process of justifying personal belief toward the
“truth” ’ (Nonaka and Takeuchi, 1995, p. 58; their italics) but this processual notion did not inform
further development of their theory.
 Nonaka and his colleagues do not discuss ‘belief’ implicitly, taking its meaning for granted, an unsound
position since ‘belief’ is an ambiguous word (Dewey, 1938, p. 15). Luper (1998) indicates that the
relationship between knowledge and belief is unclear.
 Shin et al. (2001, pp. 337–9) distinguish a third category of knowledge perspectives, ‘belief in mind’.
Since ‘beliefs in mind’ are typically held to take the form of representations (Bechtel, 1998), this could
be included in the decontextualized group, although were it to be argued that such beliefs only generate
meaning in contexts, then it would belong to the context dependent group. Either way makes no
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