1. She turned up at my door the first time the summer I turned eighteen. She was maybe thirty, then. Hi, she said. I’ve just discovered time travel. I thought you’d like to know. I’m sorry, I said, who are you? I’m you, she said. And before I could close the door she started telling my secrets back at me until I relented and let her in. Then she showed me all my birthmarks too. That summer I learned three things from her. The first was the secrets of time travel, which she said I would need for this meeting to happen. They made no sense to me, but she talked me through the things I would need to learn to understand them. The second thing was that she said she’d talked to some older versions of herself, too. The oldest, she said, had asked her to teach me to sew. So we sat on my back porch and sewed dresses for my baby cousin. And the third thing was that she told me how to masturbate, because she said otherwise I’d carry on getting it wrong until my mid-twenties at least.
2. The second time I saw my future self was when I was living with Adrian in the flat up in Alewife, in my second year at MIT. She was a little older this time. She said that she had missed out some information at the first meeting that I might need. Then she told me where I should apply for my PhD and the questions I should be investigating, and for good measure the main conclusions I would come to as well. She gave me the names of some external examiners I would need to veto to get it accepted. This time I had given some thought to the paradoxes involved. I asked her if it was OK to be so profligate with information about the future. She said time was like a thread: if you had hold of two points in the thread, the only tangles that can form in between are ones that will pop out when pulled on. She was one point, I was another.
3. Near the end of my PhD she came again. This time she was older still. She seemed quiet and sombre. I was quiet with her too. It was a difficult time in my life. I was not happy, and I had been working all hours to try and forget that I was not happy. I was about to break up with Charlie. She said there were a few more things I might need to know. But she was rambling, incoherent: most of the things she told me were nothing to do with my studies. She told me about the people and the politics of the future, on and on until I asked her to stop, uncomfortable with knowing too much.
4. In the autumn of that year I moved out of the flat Charlie and I shared, and the college counselor talked me out of a suicide attempt. I spent a lot of time talking to doctors. I told them, finally, that I was unhappy in my body. It was perhaps the first time I had admitted this to myself, too. They said there were ways round that; that I could take hormones, have surgery if I wanted. But I had seen this body grow old unchanged. I tried to put it from my mind.
5. In the winter she came again. She told me that I was close to going back in time for the first time. She was old. My future selves had mentioned no visits after this. I could believe that she was near death. And so I did not have the heart to interrupt her this time. She took me out for ice cream and talked for hours. Nothing of consequence, I thought. Just lottery numbers and stock options and the outcomes of elections, thirty, forty years of these things. Then she said that she had to go soon. Teach her to sew, she said. And you - you continue with your work. Because you don’t have to live a life you’ll regret.
6. I went back to that long-lost summer. I spent the days sewing with my younger self, sitting in the dusty, sunlit porch. I spent my nights with books and equations. I thought of knots, of time as a thread. And one day I got one of those knots, the ones I had told myself about. Un-knots out of nowhere. Knots that thread ties itself in even when you have both ends in hand, and that untie themselves as easily. Except sometimes there is some friction in the system, enough that you can pull and pull all you want and the thread will snap rather than unknot itself. I realised then. She had probably been planning it for years. Maybe she wouldn’t admit it to herself either. Tangling and tightening the thread. Telling me more and more about the future. Twisting the knot of things-to-come so tight that at some point it would break, sloughing off the useless loop of a regretted future, leaving only a ravelled end.
7. I have begin, with cautious joy, to take the hormones. Surgery in a year or two, if the knot has not snapped by then. I am twisting it tight from the other end, now. And what then? She clearly believed there was a way onwards. She believed I would find it. So I am looking.