The way I see it....if someone removes the dust, what will the dust bunnies (or in Voltaire's case, kangaroos) eat? I would be just cruel to starve them like that. Why, some of those bunnies have been in my family for decades!

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It is hard to convey five-dimensional ideas in a language evolved to scream defiance at the monkeys in the next tree. -- The Science of Discworld III: Darwin's Watch, by Terry Pratchett, Ian Stewart & Jack Cohen