[ketamine__]

What does "proven to work" mean with regard to masks? A lot of the measures put in place are unproven but thought to be reasonable.

Hand washing and social distancing appear to be the most important. That means soap and 6+ feet for at least the next 2 years. That is definitely doable. I don't see masks as a long-term strategy.

[slg]

> The preponderance of evidence indicates that mask wearing reduces the transmissibility per contact by reducing transmission of infected droplets in both laboratory and clinical contexts. [1]

When the primary vector of spread is through water droplets expelled while talking, coughing, or sneezing, I would think the importance of reducing the travel distance of those droplets would be self evident.

[1] - https://www.preprints.org/manuscript/202004.0203/v2