Is 100% Test Coverage a Good Tool?

When I was doing TDD, we were doing stupid tests that just didn't have any value to them. And so that's what I worry about when you're doing testing. 100% test coverage is nice to have, but it doesn't guarantee you that you're going to miss some edge case,. But it does make you feel better. Even a hundred percent code coverage doesn't mean 100% true guess coverage. That's why I guess 100% is important because like you need to be explicit about what you don't want to test.