In 1665, the Dutch inventor of the pendulum clock discovered an odd sympathy between the pendulums of two clocks hung together. He discovered that when clocks were hung in close proximity, their pendulums would swing in precisely opposite directions in perfect rhythm. He suggested possible explanations, but he was never able to prove them.
Recently, scientists at Georgia Tech proved that pendulums actually sense an imperceptible movement in the beam on which the clocks are hung, and that movement eventually causes the other clock to swing with opposite synchronicity.
Similarly, I believe people are created to live in rhythm with one another. We are more influenced by the people around us than we realize. We impact them and they impact us. We are not independent agents. We are part of a community.