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Small-Scale Question Sunday for December 7, 2025

Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?

This is your opportunity to ask questions. No question too simple or too silly.

Culture war topics are accepted, and proposals for a better intro post are appreciated.

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My descendants in 1000 years will presumably have as little to do with my values, culture, genes, and life as I do to my many ancestors from the year 1025.

I am actually incredibly similar to my ancestors from a thousand years ago - they lived in a different country and spoke a different language, but there are a lot of things we have in common.

one of them might go out into the Nevada desert and drink from a stream that has nuclear waste runoff in it.

Except that nuclear waste runoff won't be limited to that stream. What bodies of water will that stream feed into? What ecosystems will draw upon that river for water? A single stream being rendered unusable would be a perfectly acceptable price to pay for cheap, relatively clean nuclear power - but that's not the price actually being paid, nor is it what we're getting for that price. A single stream feeds into the broader ecosystem and harms there will spread in ways that cause immense damage to the fabric of life in the future. That radioactive water will reach aquifers and groundwater supplies, it will reach the ocean, it will reach the atmosphere as it passes through the water cycle and becomes rain. Nature will adapt, for sure, but humans don't evolve nearly as quickly as wolves or bacteria - and the evolution of radiation resistance via natural selection would involve incredible amounts of human suffering and pain.

You are implying that the person you're responding to doesn't care about the world he bequeaths to his descendants.

I don't think that qualifies as snark - not caring about the fate of the Earth is a fairly common position among a lot of rationalist circles, especially ones who believe we will colonise space or discover AGI in short order.

I am happy to have you here for the debate on cost, because that's the debate that actually matters

Sure, here's the debate: Barring a dramatic increase in EROEI, nuclear power is uncompetitive with solar and other renewables. While it is the appropriate solution for some limited circumstances (nuclear submarines, having a colonial empire that lets you get effectively free uranium, etc), it is no way an actual answer to the energy crisis rapidly approaching the world.

Far from being an irrelevant distraction from the argument, nuclear waste and the proper safekeeping/disposal of it is one of the bigger contributors to the EROEI problems of nuclear power. When the final accounting is done, the costs of that storage could leave nuclear power with a negative EROEI - we would have been better off simply not doing it at all save for the generation of certain medically and scientifically useful isotopes.