I am a researcher in this field and PNAS is fine medium to communicate. This paper actually first appeared in arxiv which is where everything seems to go first.

I am a researcher in this field and PNAS is fine medium to communicate. This paper actually first appeared in arxiv which is where everything seems to go first. Having it go from arvix to PNAS is a good indicator that it is a good paper, and it is! It would be a shame to dismiss it. Hinton's paper in 2006 on reducing dimensionality with NNs appeared in Science and nobody paid attention to that either at the time.