@pemerton
You described in the thread (it's now approaching War and Peace status, I guess) that
@zarionofarabel started, where you described your mage character (Thurgon's sidekick, IIRC, whose name I've forgotten--I am miserable with names; I consider it a win that I remember all the characters' names in two campaigns I'm DMing) determining, in a Burning Wheel game using the Greyhawk map, that Evard's tower was "around here somewhere." The exact mechanics may not be entirely necessary to discuss, but I have one main question, and a couple-few prefatory question (to make sure I'm understanding things)
Prefatory question 1: Because you had success on the check, you were able to narrate that the tower was where you wanted it to be, without consequence or complication?
Prefatory question 2: Had you failed, the GM would have been able to say "It's not around here" or "It's around here but it's cursed/in ruins/otherwise a mess"?
Main question: Would it have been fair (in this context, within expectations for the game) for the GM's response on a failure to say, "Yeah, it's around here. You practically walked past it on your way to town. Why didn't you stop?"
I'm asking because I'd kinda want to know that, even on a success (though I gather there'd be roughly no reason to ask).