I suspect many startups follow this pattern: 1. Launch with flawed hypothesis. 2. Confused or disappointed users say what they really want. 3. Pivot that leads to product market fit (in Seatgeek's case, launching stadium maps, Columbus, etc).

We went through that at GiftRocket. We launched with the premise of geo-located gift cards. Of those who tried, many had bad experiences. But they gave us enough direction to kill the GPS component and turn GR into a well-packaged online way to send money as a gift.

Funny enough- PB told us to do this before we launched (the same way PG identified the issue for Seatgeek).