and it makes no sense trying to explain what I see when I look at a chart, a chart that has zero predictability.

Let's not overstate it, now. If you know that it has zero predictability, wouldn't it make you a fool to use it?

Technical analysis is statistical analysis of price patterns. We will find with enough research that certain price set-ups and/or patterns provide specific odds of "success", whatever parameter we assign to that word.

The problem is that a lot of people want the "holy grail signal" that has a 100% success rate, while the best signals are more in the 55 ~ 60% range. Thus, reward/ risk profile is mostly what determines trading success.