Minsky and Papert gave a criticism on single-layer perceptrons in '86 where they proved that they could only make linear discriminators and therefore were useless for any real practical purposes harder than the XOR problem. They were wrong, given that we call multi-layer perceptrons neural networks.
Simon and Newell made their model and thought that models like theirs with production rules would point the way towards the way that humans could systematize thought. That didn't happen, although they had some cool papers.
People saw ELIZA and SHRDLU and thought that good NLP was coming in only a decade or so.... in the 60's.
Beveridge report. "The spirit was willing, but the flesh was weak" to "The vodka was good, but the meat was rotten." (that last one's a bit apocryphal, but still)
Minsky and Papert gave a criticism on single-layer perceptrons in '86 where they proved that they could only make linear discriminators and therefore were useless for any real practical purposes harder than the XOR problem. They were wrong, given that we call multi-layer perceptrons neural networks.
Simon and Newell made their model and thought that models like theirs with production rules would point the way towards the way that humans could systematize thought. That didn't happen, although they had some cool papers.
People saw ELIZA and SHRDLU and thought that good NLP was coming in only a decade or so.... in the 60's.
Beveridge report. "The spirit was willing, but the flesh was weak" to "The vodka was good, but the meat was rotten." (that last one's a bit apocryphal, but still)