I agree with all you say here. And indeed for researchers interested in building the next stage of deep learning, such topics may be important. However this co

I agree with all you say here. And indeed for researchers interested in building the next stage of deep learning, such topics may be important. However this course is about teaching how to use deep learning today to solve applied problems. Most participants in the in-person course worked in business, medicine, or life sciences. It is to that audience that my comment was directed. So we're perhaps each guilty of assuming the person asking the question wishes to study deep learning in the way we are focused on ourselves. :) Hopefully between the two of us we have now answered the question more fully than either of us individually!...