Medical hypotheses
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The majority of professional scientists make use of the artefacts of science but lack understanding of what these mean; raising the question: has the tradition of science been broken? Explicit knowledge is only a selective summary but practical capability derives from implicit, traditional or 'tacit' knowledge that is handed on between- and across-generations by slow, assimilative processes requiring extended human contact through a wide range of situations. This was achieved mainly by prolonged apprenticeship to a Master. Such methods recognize the gulf between being able to do something and knowing how you have done it; and the further gap between knowing how you have done something and being able to teach it by explicit instructions. ⋯ Most of modern science is therefore apparently in the post-holocaust situation described in A canticle for Liebowitz and After Virtue, but the catastrophe was bureaucratic, rather than violent. So, the tradition has indeed been broken. However, for as long as the fact is known that the tradition has been broken, and living representatives of the tradition are still alive and active, there still exists a remote possibility that the tradition could be revived.