[packagingguy]

So it does seem that a social contagion can make people insane.

Now you see how the witch hunts went nuts throughout the Western world a few centuries ago.

[Empire_of_Liberty]

Interesting point. I have often thought that humanity is a mix of the individualist and the social. Human beings have to live with both, in general.

Perhaps this “insanity”, which as you say recurs, is a culling of the overly social.