If somebody want give some advice that can prevent the next 2-trillion dollar mistake here in HN what will happen? The advice will be down voted heavily and maybe it will been seen as a bot from repressive regime. So most of people know the ground truth but also understand this collective bias choose keep silent.
In machine learning the trainer want to select the data from different sources to avoid over fitting. In real world there's no role acting as a god to feed different types of data. The human brain train their own neural networks. The consequence is people select the data that reinforce their existing belief because of impact from million of years evolution, even ignore the facts that can not add up. (Does any body suspect something wrong with all our perception due Taliban take control of power so quickly, I ask HNers think about it for intellectual challenge, not about or beyond politics )