All humans are arranged before you on a spectrum from introverted to extroverted. You must eliminate 25% from one end of the spectrum. You choose to eliminate the 25% on the _____ end.
(Yourself and your friends/family remain safe)
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this one's very close, but after reading wikipedia article I'm going with killing extroverts. Introverts apparently is higher intelligenc&giftedness, and higher in scientists&engineers. It's a big loss to humanity though either way and I imagine extroverts have more leaders.
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