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I like the idea that time machines are like phones in that you need a receiver to pick up the signal. A consequence is that you can only travel back to the time that the machine was turned on.
Imagine building the first receiver, and immediately have 20 people spawn within the same space
More like 2 million inconsiderate time tourists comming to gawk at the first reciver..
You may enjoy Ted Chiang's The Merchant and the Alchemist's Gate, the short story.
The whole book is great if you like thought-provoking sci-fi premises I guess: https://www.goodreads.com/en/book/show/41160292
Wow, I did not expect to find a fellow Ted Chiang enjoyer. The Merchant and the Alchemist's Gate is one of my favorite.
You're in the science meme community of Lemmy, lots of niche folks here