[sid05]

From the 3rd paragraph...

One of the decisions we made early on was to only hire athletes. Metaphorically speaking, that is. I don’t mean athletes as in people who play sports. Athletes, as in people that can play any position within your startup. It means someone is first and foremost a generalist. They are guys that think and act like founders because they’re not so locked into one individual role that they lose track of the wider needs of the company. They have lots of good skills that can be applicable all over the company but may not be the very best at any particular one skill.

So no a ninja would not necessarily be a generalist if we were to talk about ninjas...