dropdeadfred, IF you are talking about the change in the wearing of masks advice then you know the virus wasn't understood as well back then and everyone caught up. I know you know that because you have been given posts on it more than once.
IF you are talking about something else, what is your bullshit this time.
It was Plato who said, “He, O men, is the wisest, who like Socrates, knows that his wisdom is in truth worth nothing”