Can't believe I didn't see this anywhere in the 'newest' queue, because it (a) is incredibly relevant to Arc and (b) has been on the LtU front page since last month---although, it was apparently a repost. See http://lambda-the-ultimate.org/node/4691 and the previous thread linked therein.
Surprisingly insightful paper, for being such an easy read. Starts out a little humdrum, but really picks up in section 3. Definitely food for thought.