My entire text was "roughly speaking" because it depends on the startup's context and the founders' knowledge and abilities. I'm not talking about book-long spe

My entire text was "roughly speaking" because it depends on the startup's context and the founders' knowledge and abilities. I'm not talking about book-long specifications, but for sure you should have some requirements on unit functionality and code quality. And the unit's value is not about predicting the future but derives from your sales plan. This is about a startup already in a situation when it hires employees, so they usually have some historic data on the market and their own performance to base their guesses on.