A final important point in the process of representation deals with the intensity of preference. In ordinary voting, there are no methods of representing intensity of preference on particular issues. Each vote has equal weight. In a legislative body, however, trading votes presents a method of recognizing preference intensity because a series of votes occurs on multiple issues, not just single votes. Legislators, thus, can trade votes according to intensity of preference. For example a member of Congress may be particularly interested in the outcome on issue B but may have little concern about issue A. That representative may trade his or her vote on issue A for some other representative’s vote on issue B. This process, “logrolling,” can produce wasteful spending (a water project yielding benefit to a small area at great national cost, for instance), but it can also improve the responsiveness of government by ensuring that intense preferences get recognized. Furthermore, the representative process has special devices for protecting the interests of minorities. These do not appear in the general referendum process.