Ok this actually happens to my friend not so long ago, he is going on a boxing match and he will bet for the heavy favorite, then suddenly an unknown guy whisper to him, that the fight is going to be fixed and he supposedly heard it from the favorite to win, locker room, are you going to listen to that and bet for the underdog.
What's your take?
I wouldn't trust the words of a man I don't even know and would bet on a heavy boxer. I understand your friend was analyzing the outcome of the match and changing his choice because of the stranger's opinion is foolish.
Specifically, I don't think the friend is foolish by follow the strangers opinion in the change of the bet. Come to think of this; if you have been close to friends with similar mindset when it come to gambling. I have been around many friends who have helped me with my bet changed and I worn. How many times do you place a bet and worn? I mean, on your own bet placement. No man is an island, we all depends on each other for information. When they whisper it into your ear, kindly make another bet to support your initial bet placement.