The vibe I get, from the studies described, is reminiscent of the pre-guinea-pig portion of the story of Scott and Scurvy. That is, there are just enough complications at the edges to turn everything into a terrible muddle. In the case of scurvy, the complications were that which foods had vitamin C didn’t map cleanly to their ontology of food, and vitamin C was sensitive to details of how foods were stored that they didn’t pay attention to. In the case of virus transmissibility, there are a bunch of complications that we know matter sometimes, which the studies mostly fail to track, eg:
Sunlight can be a disinfectant, so, whether a surface or the air of a room can transmit a virus might depend on whether it has windows, which way the windows face and what time of day the testing was performed.
Cold viruses are widespread enough to have widespread immunity from prior exposure. Immunity might not generalize between exposure methods; ie, maybe it’s possible to be immune to low-quantity exposure but not high-quantity exposure, or immunity on nasal mucus but not deep lung, etc.
There are a huge number of viruses that are all referred to as “common cold”, with little in common biologically other than sharing an evolutionary niche.
Because immunity fades over time, there might be an auction-like dynamic where cutting off one mode of transmission still leaves you with recurring infections, just at a longer interval
I think that ultimately viruses are a low-GDP problem; after a few doublings we’ll stop breathing unfiltered air, and stop touching surfaces that lack automated cleaning, and we’ll come to think of these things as being in the same category as basic plumbing.
The vibe I get, from the studies described, is reminiscent of the pre-guinea-pig portion of the story of Scott and Scurvy. That is, there are just enough complications at the edges to turn everything into a terrible muddle. In the case of scurvy, the complications were that which foods had vitamin C didn’t map cleanly to their ontology of food, and vitamin C was sensitive to details of how foods were stored that they didn’t pay attention to. In the case of virus transmissibility, there are a bunch of complications that we know matter sometimes, which the studies mostly fail to track, eg:
Sunlight can be a disinfectant, so, whether a surface or the air of a room can transmit a virus might depend on whether it has windows, which way the windows face and what time of day the testing was performed.
Cold viruses are widespread enough to have widespread immunity from prior exposure. Immunity might not generalize between exposure methods; ie, maybe it’s possible to be immune to low-quantity exposure but not high-quantity exposure, or immunity on nasal mucus but not deep lung, etc.
There are a huge number of viruses that are all referred to as “common cold”, with little in common biologically other than sharing an evolutionary niche.
Because immunity fades over time, there might be an auction-like dynamic where cutting off one mode of transmission still leaves you with recurring infections, just at a longer interval
I think that ultimately viruses are a low-GDP problem; after a few doublings we’ll stop breathing unfiltered air, and stop touching surfaces that lack automated cleaning, and we’ll come to think of these things as being in the same category as basic plumbing.