no not really. the study says that one of the two groups was instructed to wear masks. it's the people outside that were only recommended to do so. half of them

no not really. the study says that one of the two groups was instructed to wear masks. it's the people outside that were only recommended to do so. half of them reported always wearing them and only a small minority reported never doing so. the results of the test are in line with the sad reality in most european countries that have mandatory mask wearing since last summer. nobody is questioning lab tests. to be clear: the effectiveness of mask-wearing policies on a broad population can not be done in a lab, although it would be interesting to test "not wearing masks" in a country that does have that policy; this unfortunately can't be done either because it's currently against the law - where applicable.