One area PG missed is someone, exceedingly bright, who gets interested in a totally new field where they have little or no expertise.

Using first principles they announce a bold and crazy idea. Say like Elon Musk and rockets. Sure he read some books and recruited people with domain expertise.

If you remember his story he tried to buy Russian rockets, they didn't take him seriously because he lacked the domain experience. So he was forced to take an even greater risk and build his own rocket. Doing something previously the province of only large nation states. Still he was able to pull it off.