Raymond decides to set up a lemonade stand every weekend for the next four weeks to save up for the latest x-men comic. He has to pay his brother Robert $10 as a one-time payment for him to not bully Raymond or drive his customers away. The lemons and sugar cost him $10 (the water is free) and his dad offers to set up his stall for him. He ends up making $15 his first weekend. Frank, his father notices this and advises Raymond to shut down the stall since he is making less than he is spending on the stall. What would you advise Raymond to do? Should he shut down? Why or why not?