I think in practice, if you can't build a product and you don't have a tech co-founder or whatever, or you have never once built your product and given it to anyone, and you think it's going well, you are too optimistic. Like they're being too optimistic that the idea that their articulation of this is somehow valuable or interesting versus the implementation of it. I think that's a big one. I think it also comes up in investing a lot. It often comes up in the, if only I had money, like everyone else does, I'd be able to go do this other thing. People like telling the story about other companies getting breaks and them not