Tacit knowledge (as opposed to formal or explicit
knowledge) is knowledge that
is difficult to transfer to another person by means of writing it down or
verbalising it. For example, stating to someone that Londonis in the United Kingdom is a piece of explicit knowledge that can be written down,
transmitted, and understood by a recipient. However, the ability to speak a language, use algebra,[1] or design and use complex equipment requires all sorts of knowledge
that is not always known explicitly, even by expert practitioners, and which
is difficult to explicitly transfer to users.
While tacit knowledge
appears to be simple, it has far reaching consequences and is not widely
understood.
With tacit knowledge, people
are not often aware of the knowledge they possess or how it can be valuable to
others. Effective transfer of tacit knowledge generally requires extensive
personal contact and trust. Another example of tacit knowledge is the ability
to ride a bicycle. The formal knowledge of how to ride a bicycle is that in
order to balance, if the bike falls to the left, one steers to the left. To
turn right the rider first steers to the left, and then when the bike falls
right, the rider steers to the right.[2] Knowing this formally, however, is no help in riding a bicycle, and
few riders are in fact aware of this.
Tacit knowledge is not
easily shared. It involves learning and skill, but not in a way that can be
written down. Tacit knowledge consists often of habits and culture that we do
not recognize in ourselves. In the field ofknowledge
management, the concept of tacit
knowledge refers to a knowledge possessed only by an individual and difficult
to communicate to others via words and symbols. Knowledge that is easy to
communicate is called explicit
knowledge.
Tacit knowledge has been
described as “know-how” - as opposed to “know-what” (facts), “know-why”
(science), or “know-who” (networking). It involves learning and skill but not
in a way that can be written down. The process of transforming tacit
knowledge into explicit or specifiable knowledge is known as codification,
articulation, or specification. The tacit aspects of knowledge are those that
cannot be codified, but can only be transmitted via training or gained
through personal experience.
A chief practice of
technological development is the codification of tacit knowledge into
explicit programmed operations so that processes previously requiring skilled
employees can be automated for greater efficiency and consistency at lower
cost. Such codification involves mechanically replicating the performance of
persons who possess relevant tacit knowledge; in doing so, however, the
ability of the skilled practitioner to innovate and adapt to unforeseen
circumstances based on the tacit "feel" of the situation is often
lost. The technical remedy is to attempt to substitute brute-force methods
capitalizing on the computing power of a system, such as those that enable a
supercomputer programmed to "play" chess against a grandmaster
whose tacit knowledge of the game is broad and deep.
The conflicts demonstrated
in the previous two paragraphs are reflected in Ikujiro Nonaka's model of organizational knowledge creation, in which he proposes that
tacit knowledge can be converted to explicit knowledge. In that model tacit
knowledge is presented variously as uncodifiable ("tacit aspects of
knowledge are those that cannot be codified") and codifiable
("transforming tacit knowledge into explicit knowledge is known as
codification"). This ambiguity is common in the knowledge management
literature. Nonaka diverted from Polanyi's original view of 'tacit knowing'
that lacks empirical or conceptual foundation, as is discussed in detail in a
later article by Ikujiro Nonaka and Georg von Krogh.[3]
One example of tacit
knowledge is the notion of language itself—it is not possible to learn a
language just by being taught the rules of grammar—a native speaker picks it up at a young age almost entirely unaware of the formal
grammar which they may be taught later. Another example is how to ride a bike; this can only be learned
through personal experimentation.
Collins showed[1] that a particular laser (The ppTEA laser) was designed in America
and the idea, with specific assistance from the designers, was gradually
propagated to various other universities world-wide. However, in the early
days, even when specific instructions were sent, other labs failed to replicate
the laser, it only being made to work in each case following a visit to or
from the originating lab or very close contact and dialogue. It became clear
that while the originators could clearly make the laser work, they did not
know exactly what it was that they were doing to make it work, and so could
not articulate or specify it by means of monologue articles and
specifications. But a cooperative process of dialogue enabled the tacit
knowledge to be transferred.
Another example is the Bessemer steel process — Bessemer sold a patent for his advanced steel making
process and was sued by the purchasers who couldn't get it to work. In the
end Bessemer set up his own steel company because he knew how to do it, even
though he could not convey it to his patent users. Bessemer's company became
one of the largest in the world and changed the face of steel making.[4]
As apprentices learn the
craft of their masters through observation, imitation, and practice, so do
employees of a firm learn new skills through on-the-job training. When
Matsushita started developing its automatic home bread-making machine in
1985, an early problem was how to mechanize the dough-kneading process, a
process that takes a master baker years of practice to perfect. To learn this
tacit knowledge, a member of the software development team, Ikuko Tanaka,
decided to volunteer herself as an apprentice to the head baker of the Osaka
International Hotel, who was reputed to produce the area’s best bread. After
a period of imitation and practice, one day she observed that the baker was
not only stretching but also twisting the dough in a particular fashion
(“twisting stretch”), which turned out to be the secret for making tasty
bread. The Matsushita home bakery team drew together eleven members from
completely different specializations and cultures: product planning, mechanical
engineering, control systems, and software development. The “twisting
stretch” motion was finally materialized in a prototype after a year of
iterative experimentation by the engineers and team members working closely
together, combining their explicit knowledge. For example, the engineers
added ribs to the inside of the dough case in order to hold the dough better
as it is being churned. Another team member suggested a method (later
patented) to addyeast at a later stage in the process, thereby preventing the yeast from
over-fermenting in high temperatures .[5]
According to Parsaye, there are three major
approaches to the capture of tacit knowledge from groups and individuals. They are:[6]
Interviewing experts can be
done in the form of structured
interviewing or by recording
organizationalstories. Structured interviewing of experts in a particular subject is the most
commonly used technique to capture pertinent, tacit knowledge. An example of
a structured interview would be an exit interview. Learning by being told can
be done by interviewing or by task analysis. Either way, an expert teaches
the novice the processes of a task. Task analysis is the process of
determining the actual task or policy by breaking it down and analyzing what
needs to be done to complete the task. Learning by observation can be done by
presenting the expert with a sample problem, scenario, or case study and
then observing the process used to solve the problem.
Some other techniques for
capturing tacit knowledge are:
All of these approaches
should be recorded in order to transfer the tacit knowledge into reusable
explicit knowledge.
Professor Ikujiro Nonaka has proposed the SECI (Socialization, Externalization, Combination, Internalization)
model, one of the most widely cited theories in knowledge management, to
present the spiraling knowledge processes of interaction between explicit
knowledge and tacit knowledge (Nonaka & Takeuchi 1995).
The IRG Solution - hierarchical incompetence and how
to overcome it argued that tacit
knowledge was essentially a property of social networks and that much tacit
knowledge was held in, and communicated by this informal lateral
communication between network
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mardi 14 février 2012
tacit knowledge
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