It's helpful to explain this to recent grads.

A lot of really good people are discouraged by repeated rejection. However, high levels of rejection of very qualified people are built into this (and many similar) systems. You have to be qualified AND get a lucky die roll to get in the front door. Once people stop taking rejection personally, they can start acting more rationally, and there's less emotional harm. People feel really bad about themselves otherwise.

There are back doors with less luck involved.