It's not an issue of prediction, or prophesy, it's that all the available information right now looks like a classic bubble. could it find profitably? idk. is it profitable? No. is there billions or trillions in debt changing hands too fast for anyone to keep track of? yes. is someone selling somke? most likely these are the situations in which con artists thrive. probably not everyone is intending to sell smoke. but not all of this is going to work out, some may come out on top, but some will fall, and that will be a bubble.