Let me guess,you don't trade derivatives
Wrong. its your job as a trader to take high probability trades. 51+% of the time they work, the other times they dont. There is no way you know you will be right on any individual trade.
You cannot predict human behavior for thousands of people at once, which the market is a reflection of. All it takes is 1 person to shit on your prediction. Therefore prediction, and you thinking you are Ms Cleo, is an unreliable way to look at the markets.