Chaos;Child minor spoilers, on magic/woo
The interesting thing about Chaos;Child (and Chaos;Head)'s concept of the Dirac Sea, "delusions", and consensus reality, is it reminds us a little of some things we've read before on some magic/kin-related personal websites back in the late-00s/early-10s.
There was a web page that supposed that, if everyone in the world sincerely believed a specific person could use fire magic, then they could. And that was what "real magic" was. Which just seemed a little silly to us, especially when you factor in that a significant portion of people require evidence or experience to "believe" something.
But regardless this concept here is just the same, really. Only involving some theory involving negative energy and antiparticles.
(Screenshot transcript in next toot.)
re: Chaos;Child minor spoilers, transcript
Kunosato: "By dead spots, I refer to the blind spots in the visual cortex of the human brain."
"Affecting these areas means transmitting your own delusions into them, so that the target sees your delusion."
"When that happens, the target perceives that delusion as a completely real phenomenon."
[Note: delusion = daydream]
Miyashiro: "B-but that's just a hallucination, isn't it? It's no different than hypnosis."
Kunosato: "Hypnosis? Really? Then what if every single person around you recognises that delusion as reality?"
Miyashiro: "Every single person?"
Kunosato: "That's right. And what if by 'everyone', I meant 'every single person in Shibuya'?"
"Or what if that spread to everyone in Tokyo, then everyone in Japan, and then everyone in the world? Who would tell you it wasn't real?"
Miyashiro: "Th-that's..."
Kunosato: "At that point, your delusion ceases to be a fantasy or hallucination. It then becomes reality. That's why we call it realbooting."