it's their fault if they believe in it, everyone has his own head to think,cryptocurrency world is unpredictable and it's not related to some kind of waves, it's depend on people, if they buy more it will go up if they start to sell it goes down, this why I don't believe in such preductions, I read the news and take a look if the coin is usuful or not, then I buy it, the only thing I am sure about is that bitcoin can go again to more than 20k because it's very famous now, just whales have done something to make him go down again to buy more and take profit, so I think it's good to buy with them, and if you have bitcoin don't sell but wait.