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As a note, cis and trans as prefixes viewed as opposites goes back centuries as a concept in Chemistry. (for example) two Carbons linked by a double bond one of which has a Hydrogen and a Chlorine and the other a Hydrogen and a Fluorine exist in two forms. Cis, where the Chlorine and Flourine are on the same side of the carbon bond and trans where they are across from each other.
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Because "undergrads, please abandon your national policies and make something up" will end well  --KnightShadow
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