Lately I've been thinking a fair bit about the subject of accutance and so-called "sharpness", and have been involved in a number of discussions about it. As a result, I'll be following this thread with interest.
I don't have the resources you are referring to. For folks like me, it would be appreciated if you can supply either accessible links or relevant excerpts.
I'll contribute as well, if I see anything that I think might be valuable from a "layperson's" perspective.