It’s gotta be the smartest “virus” ever known to man. It knows exactly where 6’ is not 5’11”, not 6’1”, but 6’ on the mark.
Also, it apparently only comes out at night...that’s why businesses have to close early.
I'm sure that the scientists did a double blind study and determined to the nearest hundredth of an inch that the virus his a wall at six feet.
The “6 feet” thing is just keeping people beyond the distance that respiratory droplets typically travel after a cough or sneeze, or while talking. Those droplets are the method of spreading. That’s also why masks are being recommended by health experts. It’s not that they can filter viruses, but rather the respiratory droplets that come from talking, sneezing, and coughing.
Luckily, coronavirus isn’t aerosolized, so it requires those larger droplets to carry it from person to person.
It also knows not to attack anyone within the confines of an essential business!