Actually, there are a few pat answers out there that are simply maddening to rational thinking people.

                One of them is: conspiracy theory. Everytime one points out the obvious to somebody who has ingested the Kool-Aid, that Kool-Aid drinker comes back with, "That's just a conspiracy theory."

                Another one is: racist. If one is to point out that a constantly growing human population is a threat to the survival of the planet, and that human migration is part of the problem, the Kool-Aid drinker comes back with, "You're just a racist."

                There are a million of them.