Small micro optimizations do not add up, especially not for something like error handling that does not concern most operations to begin with. Something like th

Small micro optimizations do not add up, especially not for something like error handling that does not concern most operations to begin with. Something like this error handling strategy clearly has its own cost in complexity of implementation, such that the whole thing will collapse under its own weight before you even notice a speed up. You need to make sure that you keep the size and complexity of the language and its specification within reasonable limits. So you can't just add "all of them" with a blanket statement that they will add up.