One problem with using bet-doubling systems to pay bribes with, whether it's in the futures market or in the casino, is that you not only have to convince the bribee to accept the bribe and participate in a money-laundering process, you have to get him to be willing to accept a few powers of two losses before receiving the bribe. If the bribe is small relative to the liquidity of the bribee, that's fine, as long as you've got enough trust between you that the bribee isn't worried about you walking away when you've won n*2**4 and she's lost it. But if you're trying to bribe, say, an enterprising southern lawyer whose husband's a politician, with a high fraction of her net worth, she's *not* going to be in a position to cover your bets for n*16 even if she *does* trust you. On the other hand, finding an enterprising broker to switch owners of futures contracts for a small extra commission may not be so hard.