It remains all superstition to me, one of the many superstitions surrounding gambling. If a madman can give correct predictions for a game, why has no shaman or prophet been able to give correct score predictions for several games?
Most times the people who tell this kind of story always claim to have heard it from another person; it is rarely a firsthand experience.
I agree it's rarely a firsthand experience, people are quick to believe things they hear without having any experience of it. This cannot be the White's man mentality, most Africans live their lives based on traditions and superstitious believes so it wouldn't be hard to convince them of such. An insane person has no business predicting a game in gambling, that person is suffering from a mental disorder why can't they find ways to help such people instead of abusing or taking advantage of their condition, it actually makes no sense if you think about it.