Throw out enough predictions and one is bound to be right.
Right?
The good old Twitter trick - a crypto 'influencer' wannabe creates two tweets, the first saying that xy currency will pump, and another tweet saying that very same currency will dip.
Afterwards, they just delete the wrong tweet and voila - he is a Nostradamus! 😁
It is also the way that spam prediction emails catch people out, as they are never wrong :)