I want to thank Ian McGugan, who first inspired me to write this book. He and Scott Burns have been great writing coaches. Nick Wallwork, my first publisher at John Wiley & Sons, offered to publish this book’s first edition back in 2011. My continued thanks, Nick.

I also want to thank my friends at Singapore American School. You guided this book’s first edition, helping to ensure that it was jargon-free.

Thank you, also, to the team at Wiley. Tula Weis, you’re a great publisher to work with. I hope you enjoy many adventures to some of the coolest corners of the world. Julie Kerr, thanks for the excellent edits. I’m thrilled that you appear to be an ice hockey fan.

The rest of my production team at Wiley also deserves my gratitude. And I can’t forget John S. Woerth, at Vanguard, who helped me with the charts.

Finally, this book wouldn’t exist without the encouragement of my wife, Pele Hallam-Young.