In more accurate terms, researchers know masks worn by most people do not inhibit transmission of covid particles, but practicing cleanliness and avoiding contact with others, coupled with the wearing of masks, should reduce the likelihood of catching the disease from others. That is common sense. If you never go out in public or have contact with others you will decrease your chances of catching the disease, whether you wear your mask or not, so the government mandates mask wearing for purely political reasons, not because they work.First, I will trust trained professionals from the National Academy of Sciences over "@ianmSC" on twitter every day of the week. Second, no one claimed that masks were the only relevant variable. Again, here is what the professionals have concluded:
The preponderance of evidence indicates that mask wearing reduces transmissibility per contact by reducing transmission of infected respiratory particles in both laboratory and clinical contexts. Public mask wearing is most effective at reducing spread of the virus when compliance is high.