"To the extent that [a] community of practice routinely sequesters...newcomers are prevented from peripheral participation...such sequestering when it is institutionalized is that it encourages a folk epistemology of dichotomies, for instance, between 'abstract' and 'concrete' knowledge... 1/*

These categories do not reside in the world as distinct forms of 'knowledge'...they derive from the nature of the new practice generated by sequestration. 'Abstraction' in this sense stems from the disconnectedness of a particular cultural practice. 2/*