In trading, you have to know the knowledge, that's true, because how can you trade and make a profit without knowing what knowledge you are using, because trading can't be haphazard, you can't just buy or sell, you have to know the knowledge, you have to have a reason why. You open a position and you also have a reason why you are doing analysis in that area, everything must be organized, everything must have a good basis when carrying out a trade for a reason, therefore everything must use knowledge.