Our societies are built upon make-believe, generation after generation.
Every attempt at abstraction is, ultimately, fictional. Our preferences as to what seems to corresponds closest to the world around us differs and some things like the various sciences seem to correspond best to the world around us, even though as you prick beneath the surface of each, they too contain simplifications and generalizations that may be “true enough” for our comprehension or to build functional machines with, but it is still well-corresponding fictions, just less so.
Depends on the functional systems created with these abstractions.
secular religion such as “the market” and “rational man” as unit fascinates me even more than traditional religion because practitioners are commonplace and are uninhibited.