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I knew some people who wrote a graphical demo at a small, local demoscene party. One of their effects had a static, vertical tearing artifact that moved around

I knew some people who wrote a graphical demo at a small, local demoscene party. One of their effects had a static, vertical tearing artifact that moved around based on their parameters but which they weren't able to entirely get rid of. One of them noticed that the projector screen that the demos would be shown on had a vertical splice. He eyeballed the location and tweaked the parameters to make the artifact line up with it. No one noticed.

marcosdumay 12y ago
My assembly classes at undergrad had a final project consisting of writting a tetris clone in x86 assembly. Shortly after the deadline, my program had a bug that made pieces fall up, instead of down, and I was completely unable to find it's cause... In the end, I just rewrote the score checker to verify the top of the game, instead of the bottom, and delivered a game where pieces felt down. Everybody not just noticed, but I had a line of people wanting to play it.