They all laughted!
I've been mocked for using >= in for loops just like this. And for using assert. And all of those "best practices" things you're supposed to do. "Oh that can never happen!" Yeah, I know. That's why I checked it, stupid.
But that's just the problem. It's never the stupid people. It's the smart programmers who do it. It's the REALLY GOOD programmers who don't put any checks in their code, because they "know" it's good. Beware really smart programmers.
Thank goodness I'm not very smart.