The crux of the argument is: 1. Respiratory viruses typically evolve to become attenuated after jumping between species, and this new one will move to the "swe

The crux of the argument is: 1. Respiratory viruses typically evolve to become attenuated after jumping between species, and this new one will move to the "sweet spot" where all other human coronaviruses proliferate, if it becomes endemic. 2. 40-60% of people may have some level of pre-existing immunity due to previous exposure to other cold coronaviruses. This finding is coming up again and again in microbiology preprints, and it fits most observations. Check my bio for the full essay, which actually turns into a long rant about the state of science in general.