I have long been interested in hysteria.
Hysteria is the phenomenon where nearly everyone believes in a single
worldview that can not be contradicted by evidence. The best example I
remember is the Satanic-Child-abuse hysteria in the U.S. in the
1980-90's. No one would countenance an alternative view and no
counter-evidence was taken seriously.
Today we have a new and very interesting form of hysteria that is affecting many nations, not just the U.S.: global warming. It is hysteria because no amount of data will dissuade believers. But there is a whole world of people who are not hysterical and are not part of the hysteria. The presence of millions of dissenters has no effect on diminishing the intensity of the hysterics.
That is truly fascinating for all of us who are interested in the subject of hysteria.