So I went looking for the source of the six feet guideline.
This was the first point at which I noticed that the CDC does not cite its sources.
I figured, Well this is information about social distancing and influenza is for the general public. Surely on their other pages, the ones for medical professionals, they'll have references. They'll let us know which science they are basing their recommendations on. Because that is how you do in the sciences. And also that is quite literally what the World Wide Web *was invented for*: the dissemination of research papers, with hyperlinked sources, so you could go right to them.
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