sojourner wrote:

^Who added the 24th century to the scenario?
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Right, I was wondering this same thing too. The first thing I would do is ask the ship's chronometer what year it was.
If it's the 24th Century, Starfleet should be around somewhere. If it's the 21st Century, there should be people on Earth. I would probably get a little worried if the Earth had no people on it, either.