Flirting is a time-honored way of signaling interest and attraction, to say nothing of mutual awareness. It is a kind of silent language spoken by men and women around the world.
The ways people communicate interest are so deeply rooted in human nature that the signals are automatically understood by all. Flirting is part of the behavioral repertoire we come equipped with to meet nature's most basic command—find a good mate and multiply.
Human flirting has a parallel in the animal world; it is akin to the behavioral displays many animals engage in to signal not only their availability but their suitability. The gestures and movements used in flirting provide clues to biological and psychological health.
Flirting is not a trivial activity; it requires many skills: intellect, body language, creativity, empathy. At its best, flirting can be high art, whether the flirter is vying for a soul mate, manipulating a salesperson, or just being playful.