The test starts with a man saying “ba” over and over again. It’s evident that he is "mouthing" the sound simultaneously, so if you were to read his lips, you would come up with the correct sound he is ...

Are you old enough to remember the “Magic Eye” optical illusion mania that gripped the nation in the 90’s—random patterns that you had to squint at just right for the 3D image to pop out? It turns out ...