Bigger numbers, not better brains, smarten human cultures
Tool innovations take off as populations grow and share diverse ideas
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/11/bb_CulturalTasks_free.png?fit=860%2C460&ssl=1)
CULTURE CLUB While part of a team, computer-game players saw examples of how to draw an arrowhead, left, and a fishing net, right, before trying to copy or improve on the originals. Larger groups in this game developed more effective designs, suggesting that big populations drive cultural evolution.
ISEM/CNRS