This document discusses how teams are most effective for software development. It summarizes research showing that collective intelligence is more important than individual intelligence. The key factors that contribute to strong collective intelligence are social perceptiveness, even communication among team members, and moderate diversity in cognitive styles. Specifically, the research discussed found that teams with more women tended to have higher collective intelligence. The document argues that software development is fundamentally a team sport focused on solving complex problems, rather than relying on any single person's technical skills or intelligence.