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D&D scifi, thoughts on the evolution of tech & animals
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[QUOTE="member 656954, post: 6309415"] Because it's magic, you have leeway to do anything of course, but if this population is in a "small container" and they have railguns, what stops them shattering the container from within? Also, if they're near-future in tech, that means they'll likely figure out they are in a jar. Imagine an SR-71 equivalent skimming the roof of their world. That's going to raise [I]lots[/I] of questions! And the most likely 'answer' will be, "We want to get out!" As for the animals, evolution as a response to environmental stress is common, and they'd be under extreme stress inside the jar. The lack of "clear skies" would hamper vegetation that needs it, which would starve those herbivores that eat it. The loss of those herbivores would then starve the carnivores that feed on them, all the way up the food chain...you get the idea, I'm sure. Migratory birds would probably not get fatter, they'd die out because the first generation that slams into the walls is unlikely to reproduce on the terrain they find themselves on, assuming some survive the unexpected - and traumatic - termination of their migration. Unless there is a magic river flowing through it, there won't be any marine life or shoreline, so whole classes of animals and insects instantly vanish, leading to catastrophic collapse of the food chain that relies on them! Honestly, worrying about this problem at any level will lead to madness. I'd suggest you liberally coat with handwavium and ignore it altogether :nb) [/QUOTE]
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