I'm curious to see a list of world-changing ideas that came out of domain expertise and those that the essay claims could be dismissed because the person was no

I'm curious to see a list of world-changing ideas that came out of domain expertise and those that the essay claims could be dismissed because the person was not an expert. AirBnB, which is perhaps pg's favorite company, would never have gotten into Y Combinator without Michael Seibel and the endorsement of the JTV crew. AirBnB simply would not exist today. So I hope people don't read this essay and think, "I'm not a domain expert, so I'll give up on this idea." Somewhat of a dangerous essay for that reason.