By a Honest Ponzi scheme I mean someone comes to you with a contract, and is not trying to be deceptive, is not trying to lie, doesn't have misleading marketing materials. He writes in Font size 36 : "This is a Ponzi scheme, it works the following way : [...]. You agree with all the risks involved when giving the money". This would work if this was Ponzi Scheme, or a Roulette game actually[.].

When you sign, there is a notarial act, and a video of you shaking hand and saying out loud that you understand this is a Ponzi scheme and you might end up loosing all your money, there is also some drug tests performed to make sure you are not under the influence of any drug, and some psychiatric evaluation to make sure you are not disabled in any way.

[.] Another thought slightly off topic: can I sue a Las Vegas casino because I put $100k on Red but the ball ended on Black and I lost everything? They even facilitate drugging me with C2H6O!