Give me a break. Of course it's subject to rational conjecture unless you deem anyone who disagrees with you is irrational. Bottom line is there are many alternatives between doing nothing with returning workers, and mandatory 42 day quarantine. I'm perfectly fine with twice or more times daily monitoring, keeping them away from public places to prevent irrational panic, off planes and buses, etc. but there is just no scientific or medical purpose served by mandatory house arrest of what will be hundreds, maybe thousands over time, of returning workers. The downside is great, and the benefits approaching zero over close monitoring of those individuals.