orthonormal comments on Counterfactual resiliency test for non-causal models - Less Wrong

21 Post author: Stuart_Armstrong 30 August 2012 05:30PM

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Comment author: orthonormal 07 September 2012 09:44:20PM 3 points [-]

Out of curiosity, what was it that made better metallurgy possible?

Gunpowder, which required Iron Working and Invention, and so on.