Hey there Everybody,
Just to explain the stairs bit... it happened to be at the top of my mind when I gave this interview. We were working through the Environment chapter, which covers all the rules for floors, walls, doors, traps, and other issues when someone pointed out that there were no rules for stairs. In truth, this ended up being about a 100 words in a book with over half a million, so not that big a deal. It basically covers the fact that steep stairs can be difficult terrain and some checks made on stairs are a bit harder.
Aside from that little bit of confusion, I hope you found the article informative.
Jason Bulmahn
Lead Designer
Paizo Publishing
Thanks for the clarification Jason - I figured it would be something minor like that. On a related note, though, did you do anything to patch up the more glaring holes in the rules I described? This refers especially to rules for running/racing/chasing/escaping/pursuit and rules for sleep deprivation/falling asleep. Of course, having made up a good system for running/racing/... of my own, I will keep using it, but I am still wondering if you tried to cover these holes in the rules.