I started reading history hoping to learn how to avoid the mistakes of the past, and instead came to the conclusion that history inexorably repeats itself, over a cycle just long enough for the current generation to forget the last event. (I'm trying to indicate similar kinds of mistakes in judgment, the details are always different of course.)
> I started reading history hoping to learn how to avoid the mistakes of the past
It's a noble pursuit, but the key part for you is that you _wanted_ to avoid those mistakes and put forth an effort to learn how to. The necessity, in order to truly avoid them, is that enough individuals collectively desire and pursue that. It's why (good) public education is so important for the long term health of societies.
Yeah, and eternal shame is all we deserve.