Originally posted 2016-07-14 14:08:54.
You are out for a drive, cruising along and enjoying the sights, when you notice a flashing blue light in your rear view mirror – a police cruiser is on your rear bumper. You pull over to the shoulder of the road and roll down your window. The police officer steps up to your car, pokes his head inside, glances at your dashboard, then declares “I see that you have a full tank of gas. I’m giving you a ticket for speeding!” This story is preposterous, of course. Not even the greenest rookie would issue a speeding ticket based on your gas gauge. And yet, lots of folks go around making the same error when they quote prevalence data to support their claim we’re in an epidemic of autism.