Educator : It has been argued that our professional organization should take decision about important issues such as rising dues and taking political stands - by a direct vote of all members rather than by having members vote for officers who in turn make the decisions. This would not; however, be the right way to decide these matters, for the vote of any given individual is much more likely to determine organizational policy by influencing the election of an officer than by influencing the result of a direct vote on a single issue. Which one of the following principles would, if valid, most help to justify the educator's reasoning?