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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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China actually started up a molten salt 'thorium' (eg, starting with uranium, then moving to thorium) reactor last year,

I actually mentioned this in an earlier post. If they can safely generate power with a good EROEI, great!

There's a revealed preferences sense where, if you can't solve those political problems, you can't produce power at price, and it's not entirely wrong. But it's misleading to treat it as a physics problem.

You're right that there's definitely a political aspect holding nuclear power back - the fact that you can't find enough subsaharan africans with degrees in advanced nuclear physics to meet diversity requirements most definitely imposes an additional cost on American/European nuclear power efforts. But some of those policy restrictions are actually extremely sensible and following them imposes lower costs on society as a whole. Take nuclear waste for example - if you can just throw your highly radioactive waste into the river, fucking the nearby ecosystem and causing a massive spike in cancer for every living thing that is connected to that river (which is more than you'd think if you haven't studied ecology) you've actually created a problem that will be substantially more expensive to fix than simply following the regulation. Building nuclear reactors on earthquake fault lines is in fact a bad idea, as is building them in floodplains or directly next to the sea. Your nuclear reactor should also be built to rigorous construction standards rather than relying on cheap contractors who half-arse everything and replace a bunch of structural cement with styrofoam to reduce construction costs.

Do all of those regulations impose additional costs? Absolutely. But at the same time, they prevent much larger and more expensive consequences from showing up later. I'm not going to deny that some of those regulations are bad - mandating that half of your construction workers are women of colour imposes additional costs for negative benefit. But I don't think many people can accurately determine which regulations fall into the former category and which fall into the latter.

Take nuclear waste for example - if you can just throw your highly radioactive waste into the river, fucking the nearby ecosystem and causing a massive spike in cancer for every living thing that is connected to that river (which is more than you'd think if you haven't studied ecology) you've actually created a problem that will be substantially more expensive to fix than simply following the regulation.

Nobody reasonable wants to throw nuclear waste into the river. What reasonable people want is to vitrify it and then keep it in containers in a parking lot-sized storage yard in the middle of nowhere and enventually maybe reprocess it.

The unreasonable people want to spend ridiculous amounts of money to bury it all underground or something because nuclear waste remains radioactive for millions of years and let's ignore the fact that the longer half-life something has, the less dangerous it is.

The unreasonable people don’t even want to do that, they want to try to bribe really poor communities to have storage facilities near them, then decide better of it and just hold onto it.

Take nuclear waste for example - if you can just throw your highly radioactive waste into the river, fucking the nearby ecosystem and causing a massive spike in cancer for every living thing that is connected to that river (which is more than you'd think if you haven't studied ecology) you've actually created a problem that will be substantially more expensive to fix than simply following the regulation. Building nuclear reactors on earthquake fault lines is in fact a bad idea, as is building them in floodplains or directly next to the sea. Your nuclear reactor should also be built to rigorous construction standards rather than relying on cheap contractors who half-arse everything and replace a bunch of structural cement with styrofoam to reduce construction costs.

But I don't think many people can accurately determine which regulations fall into the former category and which fall into the latter.

At the risk of embarrassing myself, I feel like I could pretty easily sort them into 'yes' (most of the stuff you mentioned), 'no', and 'demands further enquiry' if I didn't have political considerations to worry about.