It's a fact that all humans are overconfident. That's why we have biases that make us confident in what we "know", and make us reject information to the contrar

It's a fact that all humans are overconfident. That's why we have biases that make us confident in what we "know", and make us reject information to the contrary even if the information is factually accurate. The overconfidence is not a trait endemic only to male "nerds". Of course, it's still helpful to concede that humans should recognize and be aware of that weakness in themselves. Overconfidence is the reason so many spend the healthy end years of their lives so much less well off financially than they spent their healthy prime years. It behooves us all to be on guard against our overconfidence.