Human beings are wired to hold self-serving beliefs about the world regardless of the accuracy of those views. While it is easy to see these tendencies in other people (e.g. flat earthers, Donald Trump’s anti-vaccination views, conspiracy theories), all human beings are wired to have blindspots when it comes to the inaccuracy of their own views. Why? Ideologies are often arbitrary but they serve social and political purposes. Nelson Mandela was once on US terrorism watchlists; nowadays, he is celebrated as a freedom fighter and human rights activist. Clearly, it’s not possible for Nelson Mandela to be both a terrorist and a hero. Yet, society conveniently ignores conflicting evidence when it distorts history to fit a particular political agenda. My theory is this: human beings participate in the mainstream ideology when it benefits them. When it doesn’t, social outcasts and misfits band together to form their own alternative ideology that benefits them. In both scenarios, the ability to ignore, downplay, and dismiss conflicting evidence lessens the mental burden of upholding a particular ideology.