Why are compilers so stupid?

Question

I always wonder why compilers can\'t figure out simple things that are obvious to the human eye. They do lots of simple optimizations, but never something even a little bit

Answer 1

It forces you (the programmer) to think about what you're writing. Forcing compilers to do your work for you doesn't help anyone: it makes the compilers much more complex (and slower!), and it makes you stupider and less attentive to your code.