What a dumb assertion that someone can be an expert on changing the world. Paul graham has lived in the startup world bubble for too long and is a bit off his rocker when it comes to having perspective on the larger picture of changing industries and global trends and dynamics. The next big thing is not some social media garbage app for sharing cat pictures. That much is clear. Take a look at the kind of low impact garbage YC specializes and funding to get a clear look at how paul graham views successful startup ideas and teams. It needs no reminder that the vast majority of YC companies, fail, have no impact, dissolve and get aquired by other teams or if they are lucky get a talent aquisition by a bigger fish with a bloated mergers and aquisitions budget. My advice to Paul, write essays about what you KNOW, not what you feel like rambling on about. You have lots of experience in the world of seed staging and getting small teams to make the leap into legitimate hard working business entities with growth potential. You don't have a ton of wisdom to share outside of that domain so stop acting like you do.