We are told of the great fears of the dangers of time travel and whether traveling to the past would warp and change the present, and how, not unlike the pre-Trinity concern that a nuclear blast could ignite the earth’s entire atmosphere, a human-scale test of time travel might wipe out the history of the planet. We did it anyway, because humans can’t not stick their fingers into wall sockets (this is a personal observation, not an organizational conclusion). We are told we did not wipe out history. Instead we learned that reality branched at the juncture of the future meeting the past.
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