> Do you have any specific reason to believe that? They have more money so they can send more developers to these conferences than startups. Also, they have mo

> Do you have any specific reason to believe that? They have more money so they can send more developers to these conferences than startups. Also, they have more employees, so the odds of a number of them being Rails developers is higher. But that's not even what was being discussed in the context of my "selection bias" remark: the OP was saying that Ruby is used in BigBiz and used Ruby conference attendance to support this claim, which is different from what you are arguing.