"All of these were ideas that seemed bad but turned out to be good, and this is the magic formula for major success."

I see this sentiment expressed often, like it's a good thing that you want to pursue an idea that seems bad.

If I were to think about founding a start-up, I'd rather find an opportunity that makes sense and sounds good, validate the opportunity, talk to potential customers, and do as much diligence as possible before diving in. So essentially, if something seems like a bad idea, I'd move on to the next idea.

This may make it harder to create a unicorn (since I'd clearly miss some aspect that makes the idea not bad), but I bet it's a better, less risky way of trying to achieve a high-growth start-up with great potential. Good ideas fail as well, but I'd wager it's less often than bad ideas.