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A traveler is about to embark on a mission to Mars. A technician is responsible for communications with the traveler. An entangled pair of electrons is prepared, one to make the trip to mars and one to remain on Earth.

When the traveler reaches Mars he changes the spin on his entangled electron. Simultaneously by measurement on both sides, the Earth-bound electron changes spin.

By prior agreement, the change in spin indicates the arrival of the traveler on Mars, by faster than light communication.

Brian Wachter

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# EPR, Bell question

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