This kind of event is just like an imagination because everyone knows that nothing is 100% certain in sport betting or casino. the only thing that can make me go all in on a bet is if the person that told me agrees to refund me if it loses. if this is agreed upon then i can borrow some money to play but these things dosent really happen like that. i have seen some people being scammed with this kind of idea that a game is 100% sure in the name of fixed game and they pay for it but eventually lose.
That's true, so we as gamblers also have to think that even though he says his predictions that he can really achieve a 100% chance of winning, that doesn't guarantee that we can win. Maybe you can, but you can't win continuously because this is gambling where changes make betting uncertain. But if he can agree to return the money if we lose, we can bet big money because he is guaranteed to return the money if the prediction is wrong. So be careful if we see offers like this because nothing is certain in gambling.