Two of Us

I have no memory of becoming a brother. I was just one already. There are normal relationships where at some point you can in principle say: before this person, after this person. Even with parents there is at least a conceptual asymmetry because obviously they existed before you. With Isaac there was no before. We started at the same time. Every early developmental milestone that anyone could narrate about me had another participant moving through the same age beside me, close enough genetically and physically that strangers sometimes could not even reliably tell us apart.

People love twins as a visual object. The matching faces. The matching clothes. Which one is which? Who is older? Do you feel each other's pain? All the stupid questions. What is harder to communicate is that this gives you a strange baseline for identity. "Me" was never the only instance of a child with my face. Other people had to distinguish us before we did. Adults noticed differences and repeated them back to us. Maybe one of us was more outgoing in one setting, one better at one subject, one more interested in one toy, and every one of those differences had the possibility of hardening into a role because comparison was always sitting there available.

I do not want to overpsychologize this because most of the time it was not mystical. It was ordinary. Isaac was annoying. I was annoying. We wanted the same stuff. We competed. We collaborated. We existed in the same house and the same religion and many of the same classrooms. [add concrete childhood fights/games here] We could be intensely separate people and still be treated as a unit by everyone else. "The twins" could mean both of us even when only one of us had actually done something. There were probably thousands of little moments where one person's behavior updated somebody else's model of both.

There is a temptation now, because he is dead, to write this chapter as foreshadowing. I don't want to do that. Isaac was not a literary device preparing me for mortality. He was alive for almost all of my life. The overwhelming majority of the Isaac dataset is not a hospital room. It is ordinary shit. Sitting somewhere. Saying something funny. Irritating me. Having an opinion I thought was dumb. Being right about something I did not want him to be right about. The phrase "my twin brother died" is so information-dense and emotionally dominant that it can consume every weaker memory around it if I let it. So this chapter has to resist that. This is not the dead-Isaac chapter. This is the there-were-two-of-us chapter.

We diverged. Of course we did. Being genetically similar does not make two trajectories identical, and every year multiplies the environmental differences. Even in the same household we interpreted things differently. We had different social experiences, different bodies, different frustrations. Later there were enormous differences in what each of us was doing and what each of us wanted. But there was still some baseline fact that the other person had seen almost the entire sequence from a nearby camera angle. There were childhood things I could mention without setup because he had the same source material. People from later life know versions of me. Isaac knew the version before I had enough concepts to edit myself very much.

That is one reason losing a twin feels conceptually bizarre beyond grief. A large private archive disappears. There are memories where I am now the only surviving endpoint of a shared event, or at least the only endpoint with exactly our perspective on it. There are probably things I will remember incorrectly forever because the one person most likely to say "no dude, that's not what happened" is gone. There are also things I may recover because an old photograph or message brings his version partially back.

[embed: early twin photos] [embed: videos where we are talking over each other] [link: any posts/messages about being twins] [note: collect stories from family but preserve attribution]

I think being a twin also complicated the question of being special. Adults could call me gifted or unusually capable, but there was another nearly identical kid right there preventing the universe from making the obvious narcissistic claim that I was some singular biological event. If I was good at something and he was good at something else, we had evidence in the house that identity was path-dependent. If people confused us, we had evidence that other people's perception of identity could be hilariously coarse. If somebody liked one of us more, we had evidence that tiny behavioral differences could change social outcomes even when the visual/genetic prior was nearly identical.

I don't know how much of my later obsession with identity, personhood, copying, brain states, reconstruction, forks, and whether a person can persist through transformations has anything causally to do with being a twin. It would be too neat to claim that. I was interested in these questions through a whole pile of other routes. But twins are at least an existence proof sitting inside childhood that "almost the same" and "the same person" are very different categories. I never needed a philosophy paper to tell me that two extremely similar human systems can instantiate two completely distinct centers of experience.

Back then none of this was a theory. It was just me and Isaac, and I was starting to discover something else almost as important: I could make things.