A comparison of natural and artificial intelligence

This paper was motivated, in part, by Price's recent (1975) tutorial comparing human and computer visual systems. While I found his comparisons interesting, a fundamental question continued to trouble me, as it has now for a number of years. Namely, does artificial intelligence (AI) really bear any fundamentally important relationship to natural intelligence? Or are the two sufficiently different so that a comparison of human and computer visual systems, for example, might be of the same significance as a comparison of locomotion in four-legged animals and four-wheeled vehicles?