I just finished Dave Thomas' and Andy Hunt's excellent article, The Trip-Packing Dilemma. I wish I had the knack for boiling concepts down like they do and making them easy to understand. I've been questioning the YAGNI (you ain't gonna need it) concept lately of XP and they have written an excellent critique of it. It's full of food for thought. Right now, they might be favorite programming authors (better watch out Mr. Fowler). They don't know how much I get from their wisdom. I am eternally grateful.