“Over two years we conducted 200+ interviews with Googlers (our employees) and looked at more than 250 attributes of 180+ active Google teams. We were pretty confident that we’d find the perfect mix of individual traits and skills necessary for a stellar team — take one Rhodes Scholar, two extroverts, one engineer who rocks at AngularJS, and a PhD. Voila. Dream team assembled, right?
We were dead wrong. Who is on a team matters less than how the team members interact, structure their work, and view their contributions. So much for that magical algorithm.”
https://rework.withgoogle.com/guides/understanding-team-effectiveness/steps/introduction/