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  • Yeah, but my experience has so far been, to follow the metaphor, that car customers don't know anything about engines, and can't tell you anything useful from looking at one. When they're in hypothetical mode, the feedback is pretty superficial "oh, that looks like it would do what we want" and you don't get much until they actually use it for the first time to solve a real problem. Commented May 3, 2012 at 9:48