%% A big problem with TA; Bright DayTrading Co never liked 5 minute charts too long LOL .I hardly ever use them -to many comissiopns......LOL
For calculation kind of TA like moving average, at least you can try to prove it works in history or not. For trendline kind of TA, there is no way to prove. It is like UFO kind of stuff.
Does Technical Analysis Work? Does Art Work? Depends on Who's Driving. youtube.com/watch?v=Fk0V_GGa2XM
Fresh H&S? Devious rascals'll probably take us down to about, oh, 7666.50, per the Church Lady https://www.investopedia.com/terms/h/head-shoulders.asp
Depends on TA. "Public" TA is not working. You may check it by: automation deep understanding "Private" TA is working (example).