I really enjoyed this back-and-forth -- so much that I agreed with all of the comments on both sides, as I read them! (Not an intellectually consistent position, I admit.)
Glad you enjoyed it - it's two people who are very passionate about the same topic. I didn't mention it beforehand but I've been working on my own solution to this problem - I've been going back and forth between drawing board and prototype for years and it's become an obsession for me. I love this problem.