Because the chess engines aren't sufficiently general purpose. http://lesswrong.com/lw/vb/efficient_crossdomain_optimization/ http://lesswrong.com/lw/vb/effici

Because the chess engines aren't sufficiently general purpose. http://lesswrong.com/lw/vb/efficient_crossdomain_optimization/ http://lesswrong.com/lw/vb/efficient_crossdomain_optimizatio... tries to address questions like the ones you ask. (Obviously the definition proposed there of "efficient cross-domain optimisation" isn't the definition of the word "intelligence", because no such thing can exist, but it is a definition that seems to match with our intuitions well.)