A doppelganger, your eerie likeness, body double or evil twin, can show up anywhere: in New Jersey, on Locust Walk, in another social scene, in another realm, during time travel.... They can bring news of impending catastrophe, or even foreshadow your death! Nonetheless, the ol' doppelganger can be, as it were, a friendly ghost, that lookalike that makes you stop and think, "What if?" Note bene: the doppelganging phenomenon hits an unpleasant chord when a person gets compared to, or confused with, someone less attractive than s/he. That really sucks. Let's keep the doppelganger to the tasteful realm of time travel, where it belongs.

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