Jack is a man of many interests. On weekdays, he takes pleasure in doing homework for long periods of time, only taking breaks when his mother forces him to eat, and to check his long-term bond investments. His mother and his therapist tell him that if he invites a classmate over for a play date, he will get an extra scoop of ice cream for dessert. Joke’s on them. Jack can only digest one scoop of ice cream before bed or else the sugar high will keep him up past his bedtime.