No, you obviously don't. The notion of "effectiveness" exists only when there is an agreement on the goal. If my goal is to have fun while driving - then I don't care about the type of "effectiveness" you have in mind, nor should I. And there isn't a single thing you can say to convince me that saving 5 minutes during commute is objectively more important than having fun while driving. This is also why we usually walk from place to place instead of running: walking is slower, but running and getting tired is not very fun: and most people choose fun over speed. People are not computer software, and what's important to us is not defined by god.

This is also why utilitarianism in ethics is ridiculous.