A fair arguement, but I've looked at it in a few different ways and see that from one view, it looks as if evil is making an excuse based on semantics and raw logic.
I can bend you view a bit and say we only ever needed one fraction of a second of evil, then we'd always have the memory of that fraction to compare everything else too, which would make everything else good by logical default.
If possible, we could stop all evil from now on, and still see everything as good, as we have the memory of evil to compare with...I shall continue this discussion soon.