You know, I haven't worked on that much software, and I've run into situations I at first thought impossible often enough that your comment just makes me laugh.

You know, I haven't worked on that much software, and I've run into situations I at first thought impossible often enough that your comment just makes me laugh. :P Unlikely? Surprising? Insane? Sure. But never call something impossible unless you can not only write down a formal proof for it but also verify your assumptions.