String Oscillation is what gives your guitar sound. Devoid of oscillation, no sound would occur. I suppose all players will profit from watching this exhibition of string oscillation. The demonstration will give you a better idea of the physical nature of the string upon being plucked. The string moves in a violent manner in terms of the action. Supplemented by the definite frequency of the note will be artifacts of the string oscillation; fret interference, nut lock (too small of a groove in the nut, neck bow or lack of bow. These coupled artifacts will give what many call guitar personality while it is truly a multitude of variables. I encourage insightful individuals to view this demonstration with a open mind. Think about the microscopic fragile world of your guitar. Doing so will help you gain a better conception of your instrument.