Disagreed. 1/0 should be infinity, and computers should be able to handle these concepts. Just look into what is 1/0.00000000000[etc]1. And no is not an error, you find out with a very real and tangible example, when you are developing a 3D engine and you want to make the camera to look at vector [ 0, 0, 0 ]. Quick resume: You can't, you need to force add a slight displacement so you can skip this silly error.