Phil, I wrote a response but HN rejected it because it was too long, so I posted it on my blog.

http://blog.ezliu.com/which-problems-to-solve-first-in-real-...

TLDR:

Despite directly opposing headlines and section titles, I don't think we really disagree on much.

Real estate is a big space and there are easy and hard problems. Most of our opposing headlines are a result of us describing different aspects of the game.

Happy to chat any time. Email in profile.