Three is a magic number
Marty Cagan on A Vision for Product Teams:
So if I’m right, over the next 3-10 years we’ll continue to see the average product team drop from something like 8 people (6 engineers, a product manager and a product designer), down to 3 (a product manager, a product designer, and an engineer). This would of course be disruptive to many people, but it also would represent a dramatic cost savings to the company.
Patrick Lencioni, The Ideal Team Player:
You get more done with three people who fit together than with a fourth who doesn’t belong.
Rei Inamoto on Why Ad Agencies Should Act More Like Tech Startups:
Every startup needs a hacker, a hustler, and a hipster.