Filed under: Real Science Content, science fiction, Speculation, Worldbuilding | Tags: interstellar colonization, science, science fiction, worldbuilding
Let’s assume, for the moment, that interstellar travel is possible. Let’s further assume that there’s no magic wand of teleportation or FTL, traveling to another star takes a looong time, and it basically means colonizing your starship (or gaiaspore, if starship is too passe for you). The ship may be Charlie Stross’s hollowed out asteroid, or a comet, or something similarly large, but whatever the ship looks like, the basic idea is that people don’t put their lives on hold for the duration of the trip. Rather, they settle into their ship, and then they (or their distant descendents) settle another world elsewhere.
The two-step is an environmental filter. Many technologies that are ubiquitous on Earth, such as cooking knives or internal combustion engines, are non-starters in free fall (where scissors work better) or in small biospheres (gasoline engines). Consequently, interstellar travelers will abandon quite a lot of Earth’s technology when they live in space. They’ll also certainly invent lots of uses for vacuum and all sorts of high energy particles, but that’s another story.
Anyway, once they’ve made the first step of abandoning Earth tech and its associated culture (no car culture in space), once they get to another planet, they’re faced with a new environment where they have to adapt again. Suddenly they have dependable gravity and a huge biosphere to draw on (or at least, a planet’s worth of resources). In the second step, do they simply adapt spacer culture and technology to meet the challenges of the new place, or do they read through copies of the ancient Wikipedia and start experimenting with, say, gasoline engines again?
There’s a real-life analogy to this process: Polynesia. As the Lapita peoples settled the Pacific, they abandoned things like pottery, weaving, and flaking rock (and possibly bronze metallurgy) as part of their adaptation to living on coral atolls. Once they colonized places like New Zealand, they didn’t spontaneously pick up their ancestor’s technologies, even though they had the resources (such as clay) to do them again. Instead, they adapted their Polynesian tool kits to new surroundings.
There are some subtleties here: for example, Polynesians didn’t just abandon pots because there was no clay on atolls. They were abandoning them before they got to the atolls, because they were switching from cooking over an open fire (where pots are useful) to cooking in an earth oven (where pots are useless). Moreover pots are more fragile than wooden bowls, coconut shells, and gourds. Similarly, they switched from flaking rock edges (on obsidian) to grinding, because grinding works on all sorts of materials, including the giant clam shells used for adze blades on atolls, while flaking just works on glassy rocks. The thing is, adzes work better when they’re ground rather than flaked (whatever they’re made of), the Polynesians also had bamboo (which can be shaped with an adze to make a nice sharp knife), and Easter Islanders figured out how to flake knives on their own in any case. The bottom line is that loss of technology isn’t just about losing the tech, its involves a whole shift to other tools and practices that sometimes makes things superfluous. A society on electric cars won’t be exactly the same as a society built around gasoline cars, because the two vehicles have different strengths and weaknesses.
Getting back to the interstellar two-step, it’s a fun to play as a thought game. If you were leaving Earth for space, what would you abandon? If you were planning on getting your descendents to settle elsewhere, would you have them do: resurrect Earth culture, adapt spacer culture, or both?
Examples of adapting spacer culture might range from using scissors and shears in place of knives, to using air guns instead of gunpowder, to using various cooking techniques that work regardless of gravity, but not gravity-requiring methods such as frying. How about transportation? Art? Agriculture? For example, if they kept goats in space, would you have them bring along cow embryos and the means to grow them to re-establish cattle, or would you rather give them the biotechnology to engineer a giant goat that fulfills most of the cow’s roles in terrestrial agriculture?
What do you think? How would you do the Interstellar Two-Step? I’ll say right off that there’s no right answer. This is a thought game, pure and simple.