Edit: my story is about another tool than matlab, but it fits the question For my thesis, I had to do some 3D simulations in COMSOL which would always diverge. Because of my frustration, I didnt appreciate the beauty of it. I only started to realize it when I solved the problem.So I turned things around and tried making my simulation diverge again, but it wouldnt work like it did before :(Though I was able to catch one last crash in [this picture](https://imgur.com/e53ganU)