I just finished reading a book about traveling between parallel worlds. It was an amazing book, and at some point down the line, I’m sure I’ll share the review of it here. While reading it, it struck me how clever Terry Pratchett and Stephen Baxter were in creating a mode of travel for The Long Earth that was so clearly available to the masses.
When access to the means of travel, in this case, across the multiverse, is controlled by a corporation or by price, the story will be about a select group that can travel. In The Long Earth (the name of both the first book and the series), the plans for the “Stepper” were released online, and involved mostly items that are available at your local hardware store. And a potato to power it.
If you ever had a potato clock, you can appreciate the simplicity of it with at least a vague understanding that you can power something with a potato. Or pair of potatoes, for the clocks. The Stepper plans were deliberately accessible and available to everybody.
Another twist in The Long Earth was that humanity only evolved on ours, referred to as Datum Earth. No need to wonder if you’re going to meet yourself, or an evil version, on the next Earth over. People stepped either east or west, with the nearest Earths, as measured in steps from Datum Earth labeled “low”. Some people went higher, building new homes far from the civilization they knew, exploring the new frontiers.
And some people found they didn’t need the steppers. Interesting adventures were had by all.