I realise all of that, but I was responding to a poster who stated 'In countries where correct mask wearing is common, it does stop transmission of the virus.'Yes, masks are one tool. But many people in our country are still not wearing them. Rapid testing is only available to private organizations, like, the NBA for example.
This has not been the case in Hong Kong, South Korea, Japan, etc, which are often lauded here for their mask wearing. Even with very high rates of wearing masks, there are other factors which result in transmission of the virus. It is only one tool of many (and yes, I realise that until the US can get testing and contact tracing figured out, the tool kit is quite deficient)