I recently came across a survey of US Tech Start-Up Founders by the venture-capital firm, First Round Capital, that yielded an insight that I think most of us, explicitly or implicitly, know to be the case:

37% said age is the strongest investor bias against founders, while 28% cited gender and 26% cited race.

Age is the strongest investor bias. No surprise there. And while the survey was focused on Tech, I don’t think it would be a stretch to envision this to be the case across start ups in other sectors as well.