Remember with the Ivy League people you’re selecting for intelligent people who can put up with authority and systems. These kids ground through Cello lessons at age 6 or whatever. They plan backup schools in middle school and want to be IBankers when they grow up and most kids want to be astronauts or whatever. They’re trained for that type of work.

Other professions are similar. Pilots need to be independent but suited to strictly internalizing procedures.