Whatever my private opinion of the idea, that they're pursuing it means they believe it. It's about getting whatever information fast enough to evaluate whether it truly is a bad idea or not.

Startups are contrarian, many of the most successful ones are the ones "experts" are convinced are bad. I think in terms of the retrospective, assume we're at the point where the startup has shut down and the post-mortem is done and the reason was because it was a bad idea, how do we get there as fast as possible so there's time to pivot.