I’ve only seen a few episodes of Sliders, and it’s been a while, but as far as I can remember the premise of the show was quasi-similar to Quantum Leap: a team of scientists slides sideways into an alternate version of Earth, does something that can be resolved in a 42-minute episode, and slides on. A quick check of Wikipedia tells me that I’m more or less on the money there.

And that kind of explains to me why parts of The Long Earth, by Terry Pratchett and Stephen Baxter, felt vaguely familiar.

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