TDD Proven Effective! Or is it?

Some weeks ago, I've posted about the TDD Test-first paper Phil Haack posted about. Here's a brand new post from Jacob Proffitt questioning about the validity of the original post. I'll probably stop posting about this, as so many post as much about the original post. (Mental note: try not to post as much about the term posting, you're not being funny, just annoying).