There's a specific kind of missing that doesn't behave like other missings. Most loss negotiates with you. You can argue with it, substitute around it, find a version of the thing or a version of yourself that makes do. Temporal loss doesn't negotiate. It sits there, complete, refusing to be anything except what it was.

The strange part is that the pull has almost nothing to do with the past itself. The past isn't pulling you backward because you want to live it again. You already did, and by the time you want it back you already know how it ends. What pulls is the difference between where you are standing now and where some other version of you once stood. You occupied a moment without knowing you were occupying it. By the time you notice, the door has closed and the key went with whoever was carrying it, which was not you, because that person is not here anymore.

Memory doesn't help, because memory doesn't preserve. It curates. You don't remember the morning you're reaching for. You remember a version of that morning, smoothed, with the low-grade dread and ordinary exhaustion of being a person in the middle of their own life quietly edited out. What survives isn't the morning. It's an emotional after-image of the morning, which is a different object. So you're missing something that wasn't fully assembled while it was happening. The original isn't in a room you can return to. The original isn't anywhere. There is only the shape memory gave it once it was safe to give it a shape.

Mark Fisher circled around this for years in Ghosts of My Life. The grief in hauntological thinking isn't only grief for the lost thing. It's grief for a way of being whose enabling conditions have evaporated. You can't return to the place because the conditions that made you possible in that place are not there to meet you. Even if the place is still physically standing, you are arriving at it as somebody else, and the version of you who could have met it as it was doesn't exist anywhere now, not even as a possibility. It's the same frame that makes certain music unlistenable in a particular way. The feeling that what you're hearing is signalling back from a future that didn't arrive.

That is the shape of it. Not just "the past is gone". Everyone knows that. The self that existed inside the past is also gone, and that's the version of you doing most of the work when the pull gets bad. You're grieving yourself. Specifically, you're grieving a briefly-existing person who was made possible by conditions that no longer exist, and whose absence is more total than almost any other absence you encounter.

Most things that go away leave the imagination something to do. A friendship fractures and somebody maybe repairs it. A place changes and you visit and find some remnant. A body breaks, and medicine and time and acceptance take over. Having work for the imagination is what makes most grief survivable, because the work is what spaces out the loss and gives it a corridor to move through.

Time doesn't give the imagination any work. The autumn you miss can't be repaired. It can't be recovered. It isn't a thing that was stolen or hidden from you. It's a thing that simply stopped being, in a way that leaves no mechanism by which it could start being again. The closest you can get is a rhyme. A similar quality of light. A similar smell when the air changes. A similar quiet at the same hour. And the rhyme is worse than nothing, because the rhyme reminds you that rhyming is the most you're ever going to get.

This is why nostalgia sometimes feels less like sadness and more like a floor that wasn't there when you put your weight on it. Sadness has a shape, a direction, an object. This doesn't. What you're feeling isn't the loss of a particular thing. It's the shape of absolute irreversibility pressing against what you were thinking about. For a second you understand what the word actually means. Then you look away, because you have to.

The other thing is that the memory keeps getting heavier. The more stories you've told yourself about a moment in the years since it happened, the more you've used it to explain other things about yourself, the more weight the moment ends up carrying. Eventually the moment isn't carrying its own weight anymore. It's carrying the weight of everything you've made it mean. When you reach for it you aren't reaching for a moment. You're reaching for a cumulative thing. An invented weight, almost, though it never feels invented from the inside.

I think about this more often than is strictly useful. That tends to be how these things keep you.