Last week, CNBC did an interview with Elon Muck. You can view a portion of it here (off Youtube).....about five minutes worth.
CNBC journalist is trying to 'key-in' on Elon's often public comments and why he has to do it.
So note at the 2:20 minute point....where the question has been thrown at Elon, and you see this 15-second pause, and his eyes are in some calculation situation where he is assembling the 'data' to deliver.
It's an interesting aspect where you don't answer the question immediately but you reflect upon the twenty possible answers to give, and eliminate nineteen of them for varying reasons.
We probably should all reflect and think in this fashion.