It makes sense that reinforcement learning on reasoning about coherent principles should bias toward principled action in real situations.

Probably also illuminates moral interpretability.

That bureaucratic sleight of hand builds roughly a decade of delay into the system. Sclerotic by design.

Do it, and most basic physics is trivial.

I bring it up to illustrate that we are already making consequential choices about the climate.

The formalized narrative makes sense through a values-based lens, as does the conversation moving through stages of grief as geophysics makes itself felt.

Exact replacement. POSIWID.

If “ocean transparency” comes to pass, it seems much likelier that we’d have to deal with a realignment of the MAD calculus.

France gets ~75% of its power from nuclear, safely and economically. France inhabits the same physical world as the rest of us, but is different politically.

If there were a will, there would be a way. If the environmental movement had paid more attention to James Hansen's testimony in 1989 than it did to Chernobyl in 1986 then we would be living in a different world.

There is no amount of damage from nuclear accidents that will be worse than what we are suffering from climate change, with no end in sight. Proliferation is another story, but how's that going anyway...?

Hydrogen leakage and structural embrittlement are overblown, i.e. the Space Shuttle tank is one of the most mass efficient architectures in history and it was full of liquid hydrogen. Terrestrially, you can buy a Toyota hydrogen car today. Materials matter, but people act like the thing needs to be made of 4" plate and will fall apart if you look at it. Scaling helps here too, as volume increases to the third power while wall area increases to the second.

The thing will, if there is any sense in the architecture, be assembled in orbit so gossamer heat shields and the like won't be a problem, nor will an extended assembly program that makes with a separately launched nuclear reactor.

For ISRU Mars return, water is incredibly abundant and there's no concern with "wasting" residual oxygen. For lunar applications, water may be scarce but oxygen is abundant in regolith.

You can't beat hydrogen as a fuel. As the lightest molecule, you get the highest exhaust velocity for the least energy input.

Run out vs. new is a straw man w/r/t/ old tech vs new.