"Micromessaging -- communicating with other human beings through visual, audible, sublingual means, no doubt predates our ability to speak. We actually read micromessages quite naturally without thinking about them. You might say human beings read each other's micromessages subconsciously, in the same way that one dog understands another dog is unfriendly simply because the dog's fur is standing on end. The dogs read each other perfectly. It's not all that different for people."