Studies in open populations say masks are not effective. https://www.spectator.co.uk/article/do-masks-stop-the-spread-of-covid-19-?irclickid=SqNy652LJxyLWrdwUx0Mo3bwUkEzdgVgEzmUyM0&utm_source=27795&utm_medium=planit_affiliates&irgwc=1
STUDIES HAVE SHOWN THAT MASKS ARE EFFECTIVE; BUT THOSE STUDIES WERE CONDUCTED IN LABS WHICH ARE CONTROLLED ENVIRONMENTS; STUDIES HAVE SHOWN THAT MASKS ARE EFFECTIVE; PRO-MASKERS AND THE MEDIA; THERE IS NO EVIDENCE THAT MASKS ARE EFFECTIVE IN PUBLIC SPACES