I agree that the Flu is another thing that people haven't investigated. I mean, some people have but many people don't think a lot about what is the Flu and where did it come from all of a sudden kind of thing.
Yeah, they say Covid has not been isolated and therefore it is probably worse than trying to see something with a super microscope that you cannot really isolate and see. I don't know if they can actually see electrons or corks or whatever is the smallest that they can see and then they can theorize smaller things. Covid might be a theory too lol.