To determine whether to operate the shuttles at Facebook's Menlo Park campus on a demand basis or according to a schedule, I would first take several factors into account. With on-demand shuttles, the benefits would include greater flexibility and efficiency since shuttles would only be in operation when needed. However, the drawbacks might consist of unpredictable expenses and possible wait times during busy periods. Conversely, running shuttles on a set schedule would offer predictability and consistency, making it easier for employees to plan their commutes and allowing the shuttle service to manage costs effectively. Nonetheless, inefficiencies could occur if shuttles operate with low passenger numbers during off-peak times. Following this initial assessment, I would examine data such as peak shuttle usage times, average wait durations, operational costs, and user opinions. Based on this information, I would conduct a cost-benefit analysis to ascertain which system would provide the greatest advantages. If the data indicates significant fluctuations in demand throughout the day, with certain peak times being consistent, a hybrid approach could be optimal—operating shuttles on a schedule during peak hours and on-demand during off-peak times.