This is nonsense. It's the same argument that people use against memory safe languages "it's possible to write memory safe code in C, you just have to not be in

This is nonsense. It's the same argument that people use against memory safe languages "it's possible to write memory safe code in C, you just have to not be incompetent". The truth is, all people are various levels of incompetence, and varies according to many different parameters that are all perfectly expected (like sleep deprivation). You design a system to be as robust as possible to all operating conditions, which includes human fallibility.