Survivorship Bias: studying successes, when the critical learning comes from failures. (This is why venture capitalists value failure.) EXAMPLE: WWII bomber armor placement: The holes in the surviving planes reveal the locations that needed the least additional armor. Look at where the survivors are unharmed, he said, and that’s where the bombers are most vulnerable; that’s probably where the planes that didn’t make it back were hit.
"5 Common Mental Errors That Stop You From Making Good Decisions" The Confirmation Bias: "Confirmation bias refers to our tendency to search for and favor information that confirms our beliefs while simultaneously ignoring or devaluing information that contradicts our beliefs."