Of course you can't, they're just guessing. If anyone can guess the future price then they're just guessing, I've read a tweet made in 2014 that 2024 price will be $100k, of course if we were in 2014 when the price was around $300 would laugh and think he's crazy, but now everything that is guessed might happen, but guessing the future price is of course something that anyone can do.