Munger argues that people are more likely to accept an instruction or request when they are given a reason for it. Explaining why something matters can improve understanding, signal that the request has a considered purpose and make the action seem more legitimate or worthwhile.

He also points to a broader feature of human behaviour: the presence of a reason can influence compliance even when the explanation is not fully understood. People often respond differently to a request that includes a rationale than to one presented as a bare command.

More broadly, the quote is about effective communication and leadership. Providing reasons can help people connect an action with its purpose rather than simply following instructions mechanically. This does not mean that any explanation is sufficient or that reasons should be used manipulatively; rather, clear and credible justification can improve cooperation, understanding and trust.