I don't think anyone disagrees with you but I don't think this would be feasible without the rapid PCR testing that they are proposing and which, until recently, wasn't ready for mass production (and still isn't for the most part). After reading the article, I am optimistic that short of a vaccine this is the route we will go to get things moving again. I'd like to know more about their filtration system. That sounded cool. I don't know if it's a panacea for every industry but certainly for sports and large scale entertainment. Other obvious applications would be for travel, schools, etc.