Last week I spoke to my local chapter of Rotary. I love Rotarians. Consistently over the decades, whenever and wherever I’ve met them, whatever they do for a living, however young or old they are or whatever they look like, Rotarians are some of the most good-natured, civic-minded people around. (Or at least they act that way, which is good enough for me.) As I always do, I asked my audience: “What makes you curious? What do you really want to learn?” Over the years, I’ve gotten used to recei...