Just because one guy with a swollen scrotal sac injected a specific substance into it doesn’t mean that injection caused the swelling of the scrotum.

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Watch out for ‘ecological’ observations; just because one country with a flattened curve implemented a specific intervention, it does not mean that intervention caused the flattening of the curve….remember, ‘association does not equal causation.’ 2/n

— Alex Summers (@alexsummers4) May 17, 2020