What are price drivers? And what if someone shows consistent profit trading purely off charts? That's just luck?
If you can quantify how many moves, or series of moves in one direction increase the odds of the next move or series being in the same or even different direction then you, brother Sam would truly be an "elite" trader. It can't be done, therefore TA is hogwash. However, I would like to be proven wrong--- Been waiting.....
"Knowing what happened" helps you because markets do not instantaneously process information. Some traders process information which is material as immaterial in the immediate aftermath of the release of that information. Once those traders realize that the information is actually material, a segment of them gets into the market in the original direction they should have gone at the earlier time. Some of those traders will make a profit on those trades and some will take losses on them. Losing traders are those who process information too slowly and inaccurately. They provide the funds to traders who process it quickly and accurately. Without those two separate categories of traders, charts (or, more accurately, simply T&S data) would not help you. With them, that data does help you.