As a food waiter in the Grill Room at The Righteous Inn, part of your job is to monitor guest comments and body language during service so you can pick up at the earliest opportunity any signs of customer dissatisfaction and intervene promptly to address whatever is the problem. As you look around the room today you notice a diner who appears to be experiencing a problem of some sort. You recognise them as a regular customer who eats with you about once every fortnight. The meal, which was serve