It's not a "rationalization" - it's a recognition that people are different, and good at different things, and how to work with and around that. As I said with the original posting, I admire PG for having 'shown the way', or at least one way, for builders to have a go at a startup.

You can look at it the other way: lots of entrepreneurs aren't that strong technically. Some go out and try and learn, some try to find other ways around the problem - by partnering with tech people, for instance.