I agree that some particulate matter in the air that is larger than 2.5 microns contains viruses, as does some that is smaller.
Please provide some data as to how many virus particles we inhale in particles larger than 2.5 microns and in particles smaller than 2.5 microns.
I am not aware of anyone having that data, therefore COVID-19 masks seem like guesswork without sufficient science to back them up.
“When you can measure what you are speaking about, and express it in numbers, you know something about it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind; it may be the beginning of knowledge, but you have scarely, in your thoughts advanced to the stage of science.”
― Lord Kelvin
Please provide some data as to how many virus particles we inhale in particles larger than 2.5 microns and in particles smaller than 2.5 microns.
I am not aware of anyone having that data, therefore COVID-19 masks seem like guesswork without sufficient science to back them up.
“When you can measure what you are speaking about, and express it in numbers, you know something about it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind; it may be the beginning of knowledge, but you have scarely, in your thoughts advanced to the stage of science.” ― Lord Kelvin