It has yield some excellent results that we should celebrate and use. Yet the consensus of the field, when I was properly informed on such things, was that we

It has yield some excellent results that we should celebrate and use. Yet the consensus of the field, when I was properly informed on such things, was that we developed back propagation while under a misunderstanding that linearly inseparable functions (e.g. XOR) could not be learned by Hebbian learning in Hopfield networks. This was a correct result in the context of his assumptions but too limited and/or over applied conclusion from Minsky's work.