So... there exist predictions where being able to do better than a coin flip does not mean you can make money over time. This is in direct contradiction to wha

So... there exist predictions where being able to do better than a coin flip does not mean you can make money over time. This is in direct contradiction to what you said above: > If you can do better than a coin flip in ANY prediction, you can make money over time. It's also not true even in the case of predictions where there is a relevant liquid market. If everyone can do better than a coin flip, then I can only make money doing better than the rest. And even if I can do better than everyone else, if it's not better enough that the earnings cover my costs I am still losing money over time.