Anecdotally I can identify two of the four living generations of my family having observed and corrected _obvious_ failures of their elder generation. What's perhaps harder to recognize is the new bad traits that get introduced.

To be fair, though, each generation has increasingly different circumstances than the previous one. The human circumstance seems to be varying more with each generation as of the industrial age.

Ideally we would collect and review all the previous lessons learned. But we tend to get fascinated by new shiny things (or Netflix series), so we aren't evolving optimally...