[FRIAM] technical notes on fusion announcement

[Gary Schiltz]

We humans tend to think of such long-term thinking as silly, frivolous mind
exercises for the elite educated. I would applaud such thinking. But
western civilization has trouble with seven generations, let alone seven
million generations.

On Fri, Dec 16, 2022 at 3:21 PM David Eric Smith <desmith at santafe.edu>
wrote:

> I doubt the answer would be interesting, but one could give it as a Fermi
> problem to an undergraduate geology class (who don’t do Fermi problems; but
> the physicists won’t know any geology).
> ...
> How much, for how long, can we extract, until the inner core grows enough
> that the geodynamo shuts down, ending the Earth’s magnetic field, the van
> Allen belts etc., and exposing the atmosphere directly to spalling by
> protons from the solar wind?
>
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