Trust Josh to ask a curly question for the StackOverflow podcast: “Why did the Stack Overflow schedule blow out?” and quoting back Jeff and Joel's own previous forecasts at them.
Made for an interesting discussion though. I certainly agree with the point that until you're actually working on something, you d
on't have a great deal of confidence in just how much there is to do … that becomes apparent as you go.
(So I can find it later: WordPress URL parameters, for example for showing all posts by Josh.)