ChrisK
"how the brain works" appears to be though electro- and bio- chemistry, which are best modeled/described right now by quantum mechanics.
Erm... There is this story about some military (US afair) training a neural net to detect tanks in images, I can't find the link right now. It worked, with amazing 100% accuracy. Then they threw another batch of images at the net. It worked, with devastating 50% accuracy. It turned out that in the first batch, all the pictures with tanks on them were shot in sunny weather, all the pictures without tanks were shot with cloudy sky. It's kind of claiming to understand every single program that ever has been written and ever will be written just because one understands touring-complete language X in detail. Or me claiming that I understand more than say 40% of what Jonathan says, although I do understand English. -- (c) this sig last receiving data processing entity. Inspect headers for past copyright information. All rights reserved. Unauthorised copying, hiring, renting, public performance and/or broadcasting of this signature prohibited.