The staring one works on others by intimidation, as you look confident in an odd therefore unpredictable manner (a scary and possibly dangerous freak); the routine itself trains you to uncritically accept what's in the later, sillier material. It's obedience training. Many critics, being terribly negative and close-minded and observing how Scientology tends to work out for people, consider the latter the main purpose of the TRs. Luke was pretty much dancing around in live fire here and dodged a bullet.