The Binary Decision Between Yes and No Zero

It can be shown mathematically that the most effective way of going through a sequential set of decisions is to divide the possibilities exactly in half each time. One may have to use an extra receptor, which entails taking an extra decision beyond the number which is strictly necessary, but the general procedure holds. The elemental decision between yes and no zero and one is the raw material of control theory. It's called a binary digit and contracted to bit.