Thank you for the insanely detailed write up.

What I want to know is what kind of magic YC saw in the application that got the team the interview. Because even from the team's perspective "There was no business model to speak of, the market size was unclear, we didn’t have much of any secret sauce, we hadn’t been working on it that long and the list goes on."

Is this an instance where the team was so compelling it warranted an interview?