A bit of simple arithmetic soon reveals the inexorable consequences of time and number. Suppose we begin with a very tiny unit, a committee, let us say, of just ten members. We think it might be reasonable to allow each member at least ten minutes for discussing the matter at hand. So we shall need about an hour and forty minutes for our meeting, certainly not an exorbitant amount of time for our committee members to spend in meeting. But suppose the subject is so complicated that each committee member might require a half-hour. Then we’ll need to plan on a five-hour meeting, or perhaps two meetings-still an acceptable amount of time.