Startup’s success rate falls by 19% if founders are college buddies

Augh. The editors changed my title. I will ask them to change it.

Some readers have pointed out that the research on diversity I quote is about investors, not founders. This is a very important point. It's the closest thing we have to a large-scale founder diversity study, however. I meant it as an example of how even basic assumptions can be wrong, and why it's important to revisit them.