The human ear makes it easy to diagnose not only certain points but also organs and body parts because the organs are reflected in the ear (nerve connection). Points and zones do not show any change in the skin conductivity if they are in normal/balanced condition. Once organs or body parts are weak or disturbed they show a measurable change in the conductivity. As an example, the healthy liver will indicate on the scale a value between 0-10, the severe condition (e.g. hepatitis) will indicate on the scale 50-100.