My smartphone is smarter than I am. It’s brain is broken up into eight processing circuits. Six of the processors are for general computing—making phone calls, playing games, tweeting and all the other smartphone wizardry we take for granted. There are two special processors, though, which are a different. One circuit is a little bit of genius. It is a natural language processor. It is always on, always listening, always ready to understand speech. It allows me to talk to the phone without touching it.
Humans have wiring in their brains—natural social processors—that interpret complex social interplay. Without conscious thought, this special purpose circuitry subtly decodes the meaning of numerous social cues: the choice of words (casual or formal, welcoming or off-putting), changes in tone (ending a sentence higher to welcome collaboration, or lower to indicate authority), the accompanying facial expressions (smiles, frowns, brow-furrowing, cocked eyebrows), gestures (folded arms, outstretched hands, shoulder brushing), body positioning (angling towards the welcomed, or away from the shunned), and many more. This processor is always on, always ready to help humans understand each other’s behavior.