Hunsaker's Law states that the amount of time it takes to complete a task is directly proportional to the time available to complete it. This means that if you have more time to finish a project, you are likely to take longer to complete it, even if the task itself does not require that much time. This principle highlights the tendency for people to fill the time they have, often leading to procrastination or inefficiency. Understanding Hunsaker's Law can help individuals manage their time better by setting stricter deadlines to encourage quicker completion of tasks.