What Is the Metaphor of Being a Fighter Pilot?

"When you explain things to me about being a fighter pilot, I'm whatever. I'm 12 degrees separated from really understanding what you're talking about," he said. "But when you explain it in Jiu Jitsu terms, I'm like, all of a sudden, I'm only six degrees away." He added: "That metaphor is every bit as accurate as all the other ones".