Cognitive Blinking

On average, a human being blinks between 15 and 20 times a minute. While we assume this rapid closure of the eyelids is merely a mechanical reflex to lubricate the cornea and clear away dust, the math doesn't add up; we blink far more frequently than physiology requires. Neuroscientists have uncovered a profound hidden function: the blink is a cognitive punctuation mark. Rather than blinking ran...