Don't lose your nerve....always GO for the DOUBLE
Cash cab contestants are routinely declining the DOUBLE-OR-NOTHING for the wrong reasons. The vast majority of the time it's NOT because of greed, it's because of FEAR.
Let me say this to any future CASH CAB contestant.
1) How many times in your life are you going to be a CASH CAB contestant? The
odds are, if you are lucky once, that's it. You'll never be on Cash Cab again. So why pass up the sporting chance for double-or-nothing?
2) When you entered the Cash Cab, you probably earned your income at a job some other place. You should never look at the Cash Cab as a source of income where you must have the money. It should never make any difference whether you win or not, at least in theory, because you're not going to be in the Cash Cab every day. If that were the case, the Cash Cab would be your job and you should accept your winnings without the double or nothing.
3) Don't let fear cloud your ability to use grade-school math DIVISION. If there's three of you and you win $600, why would you take the cash and walk if you can double it to $1,200? If you stick with $600 then each person walks with only $200. Does $200 get you far in New York City? I'm seeing even groups of four people, winning $700 with only one strike or even none, and then getting scared and walking away with only $700 to divide among 4 people.
ALWAYS DO THE DOUBLE-OR-NOTHING. You have nothing to lose.