In YC experience, 2 or 3 co-founders seems to be about perfect.

One thing that founders forget is that after they hire employees, they have to retain them.

... but the pendulum has swung way out of whack here. A bad idea is still bad, and the pivot happy world we're in today feels suboptimal.

You need someone that behaves like James Bond more than you need someone that is an expert in some particular domain.

The natural state of a start-up is to die; most start-ups require multiple miracles in their early days to escape this fate.

Good startups usually take 10 years.

Because it's one of these sort of connections between nodes- every pair of people adds communication overhead.