Oct 1, 2021Liked by Arnold Kling

Interestingly, the US states have effectively run natural experiments in the efficacy of masking (or at least of masking mandates). Take a look at the graphs for "new cases" (i.e. positive tests) and for deaths for Illinois, Wisconsin, and Indiana:




These states have all pursued very different masking policies, but it is not possible to discern from these graphs when masking was mandated in each state and when it was not. In fact, their graphs are nearly indistinguishable from each other, which strongly implies that these masking policies are utterly pointless.

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I think it’s funny how Tyler feels the need to say self-recommending, especially when it is himself that is self-recommending. But it’s endearing.

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