Two and a half years ago, I started my now longest real-world software experiment. I had read an article about how DOOMs engine works and noticed how a variable for tracking the demo kept being incremented even after the next demo started. This variable was compared with a second one storing its previous value. The issue here being, each incrementation would cause the variable to slowly get closer to an overflow, realistically this would never happen in a normal scenario, although it got me curi...