Egregore, meme, spirit

The word Egregore has been gaining some traction in certain circles, what is this word? How does it relate to memes and the memeplex? Are these just terms which are better talked about as spirit?
Why are people using occult terms suddenly? Oh and how does the zeitgeist fit into all of this? What about post modernism? Is materialism to blame?
Explore these topics and more with me!
Animation by Yana Petkova - music by Rizzi - editing done by Michál José
Ed-Gregor image by Sally Jo Mickelson Cooper
Materialism: https://youtu.be/O8WFLw8T9y4
Postmodernism: https://youtu.be/u-BSbF0zRr0
Magical Thinking: https://youtu.be/Wlhzj8OUcPk