It comes from the Ursula LeGuin novel “The Lathe of Heaven” in which there’s a guy who, whatever dreams becomes reality so his therapist starts using hypnosis to manipulate him into dreaming what they want to happen. People use it now for when you predict something online as a joke and then it happens. It only seems to ever work for bad things.

Infra materialism is an ideology in the video game Disco Elysium which argues that humanity’s collective conscious can manifest anything in reality if enough people focus on an idea long and hard enough.