I noticed, but didn't really care. I find ladders some what game flow breaking anyway, unless it is done right (i.e, ability to jump onto one if it fits the character's ability. climb faster, shoot small arms to defend one's self while on a ladder, etc.)
They would be "game development pussies" if the AI couldn't handle stairs, or variances in elevation. That would be a problem (for professional programmers).
They would be "game development pussies" if the AI couldn't handle stairs, or variances in elevation. That would be a problem (for professional programmers).