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We don't need to make exact replicas of every single old material. "Won't have an effective arsenal within a century" is silly.

And that absolutely was not a non-sequitur.



Thermonuclear weapons have considerably tighter engineering requirements than sidewalks. So much so that the comparison is ludicrous.


Even if you think the comparison is very bad, it's not a non-sequitur.


"If Roman cement misconceptions exist then the US hasn't forgotten how to make Fogbank" is literally a non sequitur.




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