Because 1) for brand new startups, which all kind of seem like dumb ideas or impossible ideas at the beginning, only a very small fraction of very talented peop

Because 1) for brand new startups, which all kind of seem like dumb ideas or impossible ideas at the beginning, only a very small fraction of very talented people are willing to join, and 2) at such a small team size, there's so much more than talent that matters. You'll end up working with that person so closely that they can't just be smart or talented -- you have to trust them to be a partner in helping steer your company towards what it's eventually going to be, in product, technology, culture, etc.