“Denial,” it says, “is not a river in Egypt” is an old therapy-related joke. Or perhaps, it’s that it is not JUST a river…. At any rate, for those in tune with old Freudian saws, the joke is a counterpunch to a diagnosis of not paying attention.
Rebutting reality is a serious problem for many people. It is not enough to disclaim the truth either of your own situation (therapeutic denial) or of facts in general (ie climate change.)