there are actually two differences between the snake illusion, on the one hand, and the doughnut and road rage illusions, on the other: (1) in the case of the snake, the illusion is explicit—it’s an actual false perception about the physical world and, for a moment, a false belief; (2) in the case of the snake, your emotional machinery is working exactly as designed. In other words, the snake illusion isn’t a result of “environmental mismatch”; it’s not a case where a feeling designed by natural selection to be in some sense “true” in a hunter-gatherer environment was rendered “false” by
...more