Yesterday, a young man secretly sent me a private message, claiming he discovered a guaranteed winning loophole in crypto contracts: with a principal of one million, start by betting 10,000, if you lose, double the bet to 20,000, keep doubling each time, and once you win once, stop and make a guaranteed 10,000 profit.

After hearing this, I almost couldn't hold back my laughter. Isn't this the classic "Martingale strategy"?
It's just that these people who haven't experienced storms think that one million is a lot.
Let's do some math: start from 10,000 and double each time—10,000, 20,000, 40,000, 80,000, 160,000, 320,000, 640,000.
See it?
You only need to lose 7 times in a row; on the 8th time, you'll need to shell out 1.28 million to break even.
By then, your one million principal would have already been exhausted.
Do you think the chance of losing 7 times in a row is low?
In those adrenaline-pumping places, losing ten times in a row is practically common.
Trying to exploit this trick to make a quick buck? You might as well leave your underwear there.
Really think that one million is your lucky charm? In front of a big needle, that's just a matter of minutes.