Overall, I am for betting because I am against bullshit. Bullshit is polluting our discourse and drowning the facts. A bet costs the bullshitter more than the non-bullshitter so the willingness to bet signals honest belief. A bet is a tax on bullshit; and it is a just tax, tribute paid by the bullshitters to those with genuine knowledge.

— Alex Tabarrok, “A Bet is a Tax on Bullshit”

I often challenge friends to a bet when our predictions differ, but they almost never take it up. They say they're “not gamblers”.