[bumby]

Then I'd say the probabilistic nature of the model was not represented correctly by the seller.

Saying the algorithm makes 95% winning trades may not mean much if those remaining 5% of trades cause you to lose most of your value.

[inflatableDodo]

Protip, do not try this argument in Vegas.

[bumby]

Good point, but at least the probabilities of casino games are generally known and available AFAIK. People just tend to not care or have a confidence bias.