He co-authored a paper that suggested a 100m in 8sec would require a sprinter to add another 10kg to each thigh and gluteal muscle to have the required power.

He co-authored a paper on the backpropagation algorithm which triggered a boom in neural network research.

In 2010, he co-authored a paper proposing the theory of hylogenesis, a theory of the origin of matter that links the formation of dark matter to baryogenesis.