The job title is mundane, but the job description borders on extraordinary. A good tour guide must be able to: Instantly earn the trust of a group of strangers. Tell folks what they can and can’t touch without sounding like a scold. Deftly deal with the Overqualified Tourgoer eager to show off their expertise. Speak loudly without sounding angry. Know all the things. Tell a great story. The memorable ones do all of the above while making visitors feel like this is their first time telling that great story. They do their jobs because they feel the magic of places. That kind of enthusiasm can enlighten and entertain, sure, but it can also change the trajectory of a life. (“Mom, how do I become the person…