In his position on the problem of mental operations, Les says that mental operations are a specific type of operation, i.e., an operation "in the mind". Les, when you say that a (Piagetian) operation is an operation "in the mind" are you speaking literally or metaphorically? It seems that you are not speaking literally because you say "in the mind", not simply in the mind. Where are then mental operations performed, thought, executed or the like? If it is said that mental operations are performed in the mind, then, to say the least, one problem arises, in the sense that mind is being reified. In other words, a ghost is being introduced in the machine. At least to me, it makes more sense to take on a Wittgensteinian position and say that mental operations, be them concrete, formal, or post formal, are performed by a determined person at certain contexts or language-games.
This is certainly a small commentary I make to all those commentaries by the scholars involved in the posting on mental operations at issue in the on-going discussion of the Piagetian list. Anyhow, I thought that my small commentary might be of some interest to help keep the discussion alive.
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