Tlon, Uqbar... by Borges. Went on a bit much about the philosophy of this imaginary world. It could be said it's far less true of Borges than others but it's still true that you have an idea and you pad it severely. And in this case with spin-offs from useless establishment philosophy. Or not. It may be going over my head.

The idea of the fictitious creation affecting our own world is a nice idea I've very much had on my own. If only I believed it.