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?
The market is very volatile and unpredictable, no matter the amount of indicators you make use of they can't still tell the future, they can only help you know whee the market is heading, no technical analysis is 100% correct, that's why you see even prefessional traders have losing trades, prices go up when there are goodnews and vice versa for price going down, that's why you need both technical analysis and fundamental to predict market movements.
Well, TA and Fundamental analysis are a part of trading. Though it was accepted that we can't predict the exact price of Bitcoin nor seeing its direction but it is a need for us to make market analysis and continue doing that, and why? Because it was necessary and that TA's places an important role in trading otherwise, you will be badly. And you can see a big difference when are trading knowing nothing compared to when you have some idea of what is going on in the market.