People travel to the past for all sorts of reasons. I find it interesting at times, but for me it’s just a job. I am what you might call a travel agent. I make sure that the travelers know what to expect, and I soothe their misgivings. And since I work on commission, I’ve sometimes been known to give the reluctant or undecided traveler just the slightest nudge in the right (to my way of thinking, anyway) direction.

Upon their return, the travelers record an interview about their experience. It’s strictly voluntary, of course, but most of our clients are eager to share their feelings with us, and I make it a point to view each and every response. Part of my job is studying human nature, and I do take pride in my work...