I think Michael P Frank is one of the more knowledgable people working on the subject, his Stanford talk is extremely informative ... https://www.youtube.com/wa

I think Michael P Frank is one of the more knowledgable people working on the subject, his Stanford talk is extremely informative ... https://www.youtube.com/watch?v=IQZ_bQbxSXk https://www.youtube.com/watch?v=IQZ_bQbxSXk