It's like that old joke, a guy is flying a plane and his instruments go out and it's storming like crazy. He leans out his window and screams into the wind, "Where am I?"

Someone screams back, "You're in an airplane."

The pilot screams, "Got it" and then finds the airstrip and lands.

He figured out where he was because the person said something that was completely correct but also completely useless, so he determined the building belonged to Microsoft tech support and figured out where he was.