The following hypothesis is motivated by ideas of Vygotsky, Lave and Donald:
We can push further the most developed forms of human cognition with appropriately designed symbolic tools used in appropriately structured collaborative groups.
The theories can be extended:
Development of mediated cognition need not stop with the young child studied by Vygotsky.
Learning need not remain alienated in modern society or be replaced by pre-modern apprenticeship a la Lave.
Evolution need not end up with the cave men studied by physical anthropology.
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