The company just needs to see you as like this maniacal execution machine.
If you don't need it yourself, and you're building something that someone else needs, realize you're at a big disadvantage.
In YC experience, 2 or 3 co-founders seems to be about perfect.
Many of the best YC companies have had phenomenally small number of employees for their first year, sometimes none besides the founders.
You have to be intense. This only comes from the CEO, this only comes from the founders.
One thing that founders always underestimate is how hard it is to recruit.