At this point, optical illusions are as common as candy. OK Go just made a whole video out of them. But it’s time to introduce yourself to “Audio Illusions,” which will serve as another example of how none your senses can be trusted. In the example below, your ears show they can be tricked just as easily as your eyes can, and it’s pretty mind-warping, to be honest. Don’t trust anyone out there. Least of all yourself …