Full Idea
Alan Turing had (in his theory of the 'Turing Machine') what I suppose is the best thought about how the mind works that anyone has had so far.
Clarification
Turing Machines mimic rational thought in a mechanical way
Gist of Idea
The Turing Machine is the best idea yet about how the mind works
Source
comment on Alan Turing (Computing Machinery and Intelligence [1950]) by Jerry A. Fodor - Jerry A. Fodor on himself p.296
Book Reference
'A Companion to the Philosophy of Mind', ed/tr. Guttenplan,Samuel [Blackwell 1995], p.296
A Reaction
I am not convinced, because I don't think rationality is possible without consciousness. The brain may bypass the representations used by a computer.