To my great surprise, Twitter is not housed in a silver pod that orbits Earth at supersonic speeds, vacuuming up and then dispersing digital bits of worldwide chitchat; it's in a big, bland office building in downtown San Francisco, near a bowling alley and an Old Navy.

You may never learn the names of any of the people you talk to in a dog park, even after many, many hours spent there with them, and many hours of conversation. But if - knock on wood - anything should ever happen to your dog, these nameless non-strangers will rally, sympathize, offer to help, and hold your hand. I know this from experience.

What's funny is that the idea of popularity - even the use of the word 'popular' - is something that had been mostly absent from my life since junior high. In fact, the hallmark of life after junior high seemed to be the shedding of popularity as a central concern.

When I heard about the Microsoft Kinect, though, I felt an urgency rising in me. A game you played without touching any machinery? A chance to wave your hands around, Minority-Report style, and move things around on a screen? This sounded like almost too much fun, with gadget-y pizzazz that sounded astonishing.

I finally overcame my phobia, and now I approach flying with a sort of studied boredom - a learned habit, thanks to my learn-to-fly-calmly training - but like all former flying phobics, I retain a weird and feverish fascination with aviation news, especially bad news.

My inspiration is really very simple: I'm struck by things that I want to know more about. I really do react just as a curious person: who is this person? What's the story behind this situation? Why do people like this or dislike this thing?

When you're researching you're learning. When you're writing, you're teaching.