I think a lot of people make the same mistake before building a business/app/product. They ask: “Do people like this idea?” That question is almost useless. People are polite. Friends are supportive. Reddit can be encouraging. AI tools are often too positive. And “sounds cool” does not pay bills. The better question is: “Assume this fails 6 months from now. What killed it?” That forces you to look at the ugly stuff: Who actually pays? What do they already use instead? I...