Market equilibrium is assumed to be a balance between greed and fear, like Yin and Yang. I guess it's what you could equate as range day. When the external forces change, the internal relationships between greed and fear change. The market yearns for that equilibrium again and moves. In Yin and Yang theory one is more aggressive than the other. Yang is male and Yin is female. Yin is soft force, Yang is brute force. In the market, a sell-off is more violent (usually) than a steady buy. You can see that …
