Philosophy / Unit 5 Philosophy 0199 short lesson, about 20 seconds
The Duplication Problem
Captions available
The idea
The duplication problem: any psychological criterion could be satisfied by two candidates at once—and one person cannot be identical to two.
In practice
A teletransporter malfunction leaves the original and builds a copy: both continuous with you, both claiming the name. Numerical identity permits one winner.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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