The Rational Entrepreneur: Cognitive biases and Silicon Valley startups
rolfnelson.com
rolfnelson.com
One reason not to have odd number of founders where n>1 is pair-ups. When people work in groups they tend to pair up and form dyads. Especially when times get tough. This is a very natural and stable psychological work configuration. An odd number of founders means someone is left out. It's no co-incidence the most basic army formation, a brick is 2x2.
I'm wondering though, would it hold true for 2 extro and 1 introvert founder?
From experience, I can say that in one situation where things never got ugly, three was a great number. In another situation, pairing up to the exclusion of one was exactly the case.