From 50/50 (it could swing either way and you can have zero knowledge on which way it'll swing), to %1-100 being able to know before hand, how much can you know?
What causes prices to go up? What causes them to go down? Obviously, no one knows for certain when it would happened, but has there been a consistent "pattern" lately? When prices have gone down, have you known to a reasonable degree than they would bounce back up? How?
No one can really say, it's just like a gamble, though I wouldn't call it a gamble lol, they are two different things. But same way that you will have to do some research on bets and know which one team is likely to win or lose or what's likely to be the score, that's similar to what you're doing in technical analysis. In technical analysis, you don't really get the actual price of what the asset is going to be in the near future, it's just like you're guessing what it's going to be by using some patterns that shows you what's likely to be the next outcome.
So it's just like a 50/50 thing, and you have to go by that and knowing very well that this may happen, and if not, then it's going to be the other. And that's just how it's meant to be, because I can't imagine what it would be like if everyone is hundred percent certain of what is going to be the next move in the market, just can't imagine that.