At 12:26 AM 27/11/99 +0100, Max wrote:
>But knowing me and all my other great ideas somebody brighter has probably
>gotten the idea sometimes in the sixties.
David Marr did, in the 70s I think. There's a huge amount of cog sci on mental modelling. Look for R. N. Shepard and Stephen Kosslyn. Try Philip Johnson-Laird's MENTAL MODELS (Harvard 1983) for a good early summary.