For example [vaguely]: writer creates a character who behaves like X, despite nobody actually behaving like X in real life. Then characters behaving like X become a wide-ranging trope. People in the real world begin to think it’s normal to behave like X, and subsequently start actually behaving like X themselves.
Any actual examples of this phenomenon happening?


It’s more common for people to misread fiction and pick the worst bits to promote as the future. For example people who read Acceleranto (https://www.antipope.org/charlie/blog-static/fiction/accelerando/accelerando.html) and develop not post capitalist innovation but slop factories in space or 1985 and develop social scores based on who the omnipresent cameras see you talking to.
Hey mate, chuck an ! In front of the [ to make markdown do what you want it to do.
Thanks
Snowcrash is also an example with the metaverse idea
You got an off-by-one error there mate