Have you ever experienced an overload of every sense at once? Well, rock concerts can almost take you there. I went to see AC/DC in the spring of 1991, and it was truly a festival of sensory overloads. My body felt as if they stimulated it in every area to its complete capacity. The level of sound was so astronomical. The decibel level was on the threshold of pain. The music roared through the streets for miles, outside the coliseum. Every time the bass drum was struck, I could feel the repercussion in the organs within my chest. It ev ....