I was thinking about error, and trying to pin down my intuitions on how often humans have succeeded at Y by getting X wrong, when I realized that, you know, natural selection.
Humans per se are just really really really bad non-nuclear mono-cellular proto-life. Literally, physics took a cell, tried to copy it, made a crapton of errors, and ended up with the human species.
Uh...oops you exist.
Just think about that next time you're embarrassed about making a mistake.