CUSTOMER: Which was the first Harry Potter book? BOOKSELLER: The Philosopher’s Stone. CUSTOMER: And the second? BOOKSELLER: The Chamber of Secrets. CUSTOMER: I’l take The Chamber of Secrets. I don’t want The Philosopher’s Stone. BOOKSELLER: Have you already read that one? CUSTOMER: No, but with series of books I always find they take a while to really get going. I don’t want to waste my time with the useless introductory stuff at the beginning. BOOKSELLER: The story in Harry Potter actually starts right away. Personally, I do recommend that you start with the first book – and it’s very good. CUSTOMER: Are you working on commission? BOOKSELLER: No. CUSTOMER: Right. How many books are there in total? BOOKSELLER: Seven. CUSTOMER: Exactly. I’m not going to waste my money on the first book when there are so many others to buy. I’l take the second one. BOOKSELLER: . . . If you’re sure. (One week later, the customer returns) BOOKSELLER: Hi, did you want to buy a copy of The Prisoner of Azkaban? CUSTOMER: What’s that? BOOKSELLER: It’s the book after The Chamber of Secrets. CUSTOMER: Oh, no, definitely not. I found that book far too confusing. I ask you, how on earth are children supposed to understand it if I can’t? I mean, who the heck is that Voldemort guy anyway? No. I’m not going to bother with the rest. BOOKSELLER: . . .