A little over a year and a half ago, I lived in Japan for about six months. Knowing I was going to be alone in a non-English-speaking country for that long, I brought along twenty-three books. I figured they would last me at least for the first month, after which I was scheduled to be in New York to celebrate the new year with Jake, and to be at work for Y2K support.

One of the books I had with me was Jane Smiley's Duplicate Keys. The novel, in my opinion, isn't Smiley's best. Actually, it was quite forgettable and such I can't remember most of the plot.

But, as in most of her novels, the characters were enticing and one of them mentioned something that stuck in my mind. Since the novel is about a murder, each of the characters that has a key to the apartment where the murder occurred, of which there are many, starts discovering things about the others and suspecting them. One of the characters mentions that she's surprised how little she knew about her boyfriend with whom she'd been for quite some time.

The question of "how well do we know the people we think we know" starts dancing around in my mind. I sit down at my computer and start typing everything I know about Jake. I start with the basic facts: how he looks, his family, his background, etc. I move into preferences, past concerns, life goals, wishes, dreams, failed attempts. Then I move onto the really private things. Traits that I assume only I, or an exclusive set of people, know.

I look through my list and feel good. After five years, I know Jake quite well. Or so I think. I move on to make lists for the other special people in my life. Close friends. Even my sister.

I'm surprised at some of the details I remember. I'm also interested to see the pattern in some cases where I know a lot in one category and practically nothing about another. If it's so consistent, it must be me and my way of relating to others.

I like the idea of 'seeing' how much I know about a person in my life. I like knowing the holes in my familiarity. I like speculating on why they're there. Was it my choice or his? Did she just not want to divulge or did I never think to ask? Are we really as close as we seem? Do I know anything about her childhood? What about his disappointments?

I recommend that you try to make your own list. At least one. Pick a significant other, a best friend. Write down all you know. From the most obvious to the subtlest detail. Put it all on paper.

See how well you know the people closest to you.

Previously? Permanence.