No need to be so coy.
The errors we have made in the past persist within the structures of society, in the institutions, the stories and the language which is passed down to iterative generations.
It's not such a simple thing for anyone to understand in a meaningful way which they can act upon, however, which is why people are kept ignorant until they put the effort in to develop their own discernment.
The problem we're running into now is that it's too easy to remain comfortably ignorant, and too many don't even try.