(It occurred to me while editing that you are not actually able to confirm that I ever put on pants.) In which John travels to Amsterdam--where he lived for two months while finishing The Fault in Our Stars--to promote the Dutch edition of the book. Along the way he visits places that were important to him and to the made-up people in his novel, including the Spui Square, the Beninghof, a bathroom that you must pay to enjoy, the Vondelpark, the Anne Frank House, the hotel de Philsosoof, takes a ride on a canal boat, and listens to a mathematician discuss infinity. Thanks, as always, to the extraordinary community of Dutch nerdfighters for their support, and to my Dutch publisher Lemniscaat for bringing me back to the city I love so much. CORRECTION: What I meant to say is that Hazel incorrectly concludes that the set of numbers between 0 and 1 is smaller than the set of numbers between 0 and 2. In fact, they are the same size. (Check out the wikipedia article about infinite cardinality for a few proofs of this mind-blowing fact.) Anyway, I don't know why I said whole numbers when I meant to say numbers. Presumably because I am an idiot.