In the nineteenth century in California a housing bubble popped. Californians promised themselves that never again would they come to believe that could depend on housing prices would rise indefinitely.
In the nineteenth century scientists consistently and continued to deny the possibility that rocks (so-called meteorites) could fall from the sky (via Personal Knowledge), evidence be damned.
Today we too believe ourselves immune to this failing. We insist that our epistemic armor has no chinks. We think that our understanding of man, society, and our surroundings is improving and in the main correct.
Epistemic humility, to know that we do not know, is as was noted just a few (countable number of) weeks back by that Socrates fellow that knowing the actual extent of our expertise and knowledge is the first step to wisdom.
One of the consistent features of the political left and specifically our Administration today is a distinct lack of epistemic humility. They are the “smart” ones who have the answers. They will avoid the sins and faults of other side committed because they are far more clever, because their epistemic skin has been dipped in the Styx and is invulnerable to the slings and arrows and mortal failings unlike the clueless other guys. How long will it take then for Paris, aka reality, to slide the poisoned arrow into their ankle?