Quick comment, I just made a dumb mistake - I had read the post last night when it was posted and came back to the discussion in the comments. I forgot which pa

Quick comment, I just made a dumb mistake - I had read the post last night when it was posted and came back to the discussion in the comments. I forgot which parts where the charter vs. which parts were Aaron's comments! So I was summarizing Aaron's gist, and in particular his comments about wanting to avoid a Python 2/3 schism. This was a case of "big burden for big gains," the burden being so large that developers didn't want to harm their hard-earned business logic implementation because 2to3 missed an edge case in a dict comparison.