To me, the biggest dividing line between mediocre and good programmers is who they write code for. The mediocre ones write their code for the computer/compiler

To me, the biggest dividing line between mediocre and good programmers is who they write code for. The mediocre ones write their code for the computer/compiler/interpreter. When it works, they're done. The good ones write their code for human readers to understand, including their future self.