Half of What You Know Lives in Someone Else's Head
Beneath the Surface · By Ali Daudji ·
Ask a couple how they met. One of them starts. The other takes over at the good part, until a correction hands it back. Somewhere in the middle they snag on a detail that could not matter less, whether the party was in March or in April, and for a few seconds they go after it with real heat. Two people, one night. Neither can reach it alone anymore.
It looks like failing memory. I've come to think it's the opposite. The night is intact; it takes both of them to hold it.
Most of us carry around an idea of memory as private property: mine in here, yours in there. Long closeness breaks that rule without asking permission. You stop holding what your person reliably holds. She keeps the birthdays, so the birthdays stopped sticking to you years ago. He knows the way to every house the two of you have ever driven to, so you ride along in a city you technically live in. This gets told as a joke about husbands, or as a warning about dependence. Both readings look past the same fact. The dividing is the closeness, and it embarrasses us only because we keep grading ourselves one head at a time long after the working unit has become the pair.
In 1991, three psychologists recruited fifty-nine dating couples at Trinity University in San Antonio and paid each couple seven dollars to come in and remember things. Everyone had been together at least three months. The material was index cards holding small facts ("Midori is a Japanese melon liqueur," "Yeasts reproduce by budding"). Half the people studied the cards beside their partner, half beside a stranger borrowed from another couple, all of them in silence, and everyone was tested alone. The couples outremembered the strangers. Then the researchers tried helping. For some pairs they assigned the jobs in advance, you take food and history, you take science and television, the kind of sensible plan any manager would draw up. The plan lifted the strangers and sank the couples. Couples given an assignment remembered less than couples left alone, less than strangers given the same plan, less than anyone in the study.
Daniel Wegner, who a few years earlier had given this kind of shared remembering its name, transactive memory, read the result plainly. Each couple already had a system, an invisible one, built up across months of noticing who tends to hold what. Their own plan was already running. The new one landed on top of it. The paper compares the disruption to a tennis stroke that falters the moment you begin to analyze it.
The paper opens on something tenderer than research tends to risk. You may have no idea where the candles are kept in your own house, the authors point out, and still find them in a blackout, because finding them means asking the person who knows. When the experiment ended, everyone was thanked and sent home with chocolate kisses. One hundred and eighteen people, paid in chocolate, for showing that two people who know each other well divide the work of remembering without ever once discussing it.
I can trace my own version of the arrangement, and so can you. There are friends who hold specific years of my life, and I know which friend holds which. There are stories I tell with total confidence that I could not put a date on without a phone call first. I'd like to report that I hold my end gracefully. More than once, though, mid-story, I've felt a flash of resentment when the correction lands, the small wish to own outright a night I only ever co-owned. And when a question comes up whose answer lives with a person I can't reach, what hits is less the blank of forgetting than the ache of a working system with one side offline. "Ask him, he remembers everything" is not a joke about your memory. It's a map of where the two of you keep yourselves.
Research papers do not usually end where this one ends. The last page turns to what happens when the arrangement loses half of itself. When a relationship ends, the authors write, a person abruptly becomes the only expert on everything that used to live on the other side, and whoever comes next must start over toward knowing "even a small part of what the old couple took for granted."
Joan Didion and John Gregory Dunne were married for one month short of forty years, both writers, often collaborators. He died of a sudden heart attack on the evening of December 30, 2003, just as they sat down to dinner. The Year of Magical Thinking, the book she wrote about the year that followed, gets shelved under grief, and it belongs there. Read it beside the Wegner paper and it becomes something else as well, the clearest account anyone has written of a shared memory continuing in one head. She found she could not give away his shoes, because a part of her was still holding that he would need them if he came back. She kept meeting the impulse, again and again, to tell him something. And then she wrote it down: "There is no one to hear this news, nowhere to go with the unmade plan, the uncompleted thought. There is no one to agree, disagree, talk back."
Look at what her sentence counts as gone. The news with no listener. The thought with no one to finish it against. You can hand your memory to software now, and I do, and it holds everything I give it and disputes none of it. The person who holds your half is a different kind of keeper. They remember it their way, and they'll contradict you in front of your friends. The night you tell as March they hold as April, which is irritating, and which is also the proof that the night exists somewhere outside your own telling. A fact can be backed up. The rest of a life needs someone free to say you have it wrong.
I know the objection. I've made it myself, back when I mistook self-sufficiency for maturity. A person is a dangerous place to keep something you cannot afford to lose. That's true. It's also the deal. There is no version of building a life with someone that does not end up storing half of it in hands that can vanish. You can decline the arrangement and hold everything yourself. Then nothing can be taken from you, because nothing was ever shared.
The couple at the party will never settle the month, and they shouldn't. There's no referee. The only other witness to that night is the night itself, and it isn't talking. So they'll do what they always do, hand the story back and forth until it wears smooth, each carrying the part the other drops. They are both still there, holding one year from opposite ends. March. April. Neither of them setting it down.