What do you think about HYIPs?

Most of the HIYP are ponzi shemes,a ponzi sheme pays with the money that came in,it's easy to give you 10% a day for 10 days because when you invest you have paid 100%,when you compound your earnings it could last longer. When there's not enough fresh money that comes in,it's over. So with these ponzi shemes you can only win when there come more fools after you that invest in that ponzi sheme,when you realize that and you're fast enough to put your invested money out of it you can win by being a fool. Yes, sometimes there's nothing wrong with being a fool when you realize that you're one.

Hi goldenswords. I have read this word a lot on mylot but I don't know what HYIP means? Thanks.