The question every investor would like asked is how to distinguish good startups from bad. I think most collect hueristics applied to a few numbers and gut feel

The question every investor would like asked is how to distinguish good startups from bad. I think most collect hueristics applied to a few numbers and gut feelings. Founders seem to not get along? Seem not passionate enough? Market too small? Market too hard to win? Not builders? All lame. Persistence, vision, and flexibility are things I've repeatedly heard help predict winners.