Will never be possible. Investors could only draw assumptions and speculations of how will the market move based on several factors such as news and other relative informations refflecting to world market and this industry in general. Well timeframes would also help with formulation of assumptions or the idea of making a prediction but most of the time, accurately predicting market behavior is impossible especially in this industry wherein market price volatility is in nature since demand is a changing factor which reacts to many things.
No one can predict future market conditions, if this can be done then they are just guessing, everyone just keeps buying because they hope the future price will improve, other than that usually people who like to guess don't do anything, just give guesses, I even followed several people who gave 2 guesses, namely the price will skyrocket and the price will decrease, if something goes wrong, the post will be deleted.
I also don't understand why you think like that, because not everyone who guesses does anything. I'm not even sure if you've done any research on those guessing except for a few people you've seen in person. After all, those who make price predictions are actually not guessing, but rather speculating on prices that have happened before even though this will not be completely accurate because prices always tend to change over time.
More of a scientific or valid guess becuse there are basis of those speculations such as previous chart and market price behavior within that month or quarter and such as well as events relative to one another such as halving.