Well it depends doesn't it miguelin11 I'm not sure on what but it definentley depends. 8.314/10
"I was in a job interview and I opened a book and started reading. Then I said to the guy 'Let me ask you a question. If you are in a spaceship that is traveling at the speed of light, and you turn on the headlights, does anything happen?' He said 'I don't know'. I said 'I don't want your job'."
"I saw a close friend of mine the other day... He said 'Stephen, why haven't you called me."... I said, "I can't call everyone I want... my (new) phone has no 'five' on it."... He said, "How long have you had it?"... I said, "I don't know... my calendar has no 'seven's on it."