I guess Lieutenant Dan figured there's some things you just can't change. He didn't want to be called crippled, just like I didn't want to be called stupid.
The person who tries to live alone will not succeed as a human being. His heart withers if it does not answer another heart. His mind shrinks away if he hears only the echoes of his own thoughts and finds no other inspiration.
One strategy: "We've had three big ideas at Amazon that we've stuck with for 18 years, and they're the reason we're successful: Put the customer first. Invent. And be patient."