Masks: proven ineffectiveness or unproven effectiveness?

According to the new Cochrane meta-analy­sis, the effec­tive­ness of masks against the spread of res­pi­ra­to­ry infec­tions has not yet been proven. However, they assess the reli­a­bil­i­ty of this con­clu­sion is low because the avail­able research is incon­clu­sive. Science jour­nal­ist Ira Yakutenko explained in detail why this is the case. We can argue there until the prop­er research arrives.