Working several years in a refinery and other industrial settings qualified me to watch endless hours of safety videos; many over & over again. There’s one video that I remember more than all the rest and it metaphorically relates to the need for social distancing during the coronavirus.
This video instructs on the dangers of working in a confined space like an empty tank or vessel. It usually starts with methods on purging dangerous gases, testing to make sure it’s safe to go in, and keeping someone outside the vessel to watch you in case something goes wrong. Of course, since it’s a safety video, something goes wrong.