A bug that has a single simple cause, but which causes the system to exhibit wildly chaotic and unpredictable behaviour. Named after the MandelbrotSet.

http://spaz.ca/pix/buddhabrot1200x1200.png
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Contrast with a Fractal''''''Bug, which is a bug, after which its resolution is found, reveals additional ''self-similar'' bugs elsewhere in the code, after which ''they'' are fixed, likewise elsewhere still.
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See BugTheory.
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CategoryBug