A common way to analyze an individual's choice between work and free time is to model it on a daily or weekly basis. An alternative approach is to model the choice over a longer, fixed duration, such as a 16-week semester, by considering the total hours available for the entire period. Critically evaluate this 'total period' modeling approach. In your answer, discuss at least one significant advantage and one significant limitation of using this aggregate method compared to a daily or weekly analysis.