There was a study in which masks prove that science is ineffective. There were lots of studies, but none of them met the minimum criteria for credibility. The only thing I would want them to test is people in nursing homes who have visitors that always wear masks and keep their visits to let's say, five minutes. And then you see how many old people die if they don't use those masks. Everything else is just sort of well, it's in the general area of politics and science,. But it doesn't really tell anything when you're talking about something like this.