When the villain creates a machine of diabolical nature, some function gets thrown into the mix that wasn't quite planned, and doesn't really serve any practical reason. Expect Lampshade Hanging to ensue. See also Fridge Logic. Compare Oven Logic, where the oven dial goes up to thousands of degrees. One has to wonder why the oven had a dial that could go up that high if it wasn't meant to be used that way. Compare with Cow Tools. Contrast with Mundane Utility. Overlaps a lot with Self-Destruct Mechanism. Examples of Inventional Wisdom include: