It's October again. You noticed because a coffee shop put out something with pumpkin in it, and your first honest thought wasn't excitement. It was a small dropping sensation, like missing a stair. Wait. Already?
You know the year happened. You were there for all of it. But if someone asked you to lay out what actually filled the months between January and now, you'd stall. There was that trip. A birthday, maybe two. A rough patch in spring you'd rather not itemize. And then a great grey smear where the rest should be. Not empty, exactly. Just unaccounted for. One long Tuesday wearing twelve different dates.
Here's the thing I want to convince you of: time didn't speed up. Your memory just stopped taking pictures.
the years really do get faster, but not the weeks
First, you're not imagining it, and it's not a personal failing. In 2005, psychologists Marc Wittmann and Sandra Lehnhoff surveyed 499 people between the ages of 14 and 94 about how fast time seemed to move. The interesting part is what they didn't find. For short stretches, an hour or a week, age made almost no difference. Everybody more or less agreed on how a week felt. It was only over longer spans, decades, that older people reported time racing by.
So the acceleration isn't happening minute to minute. It's happening in the rearview mirror. The week feels normal while you're inside it. It's when you look back at the year that it seems to have evaporated. Which means the speed you're feeling isn't really about time at all. It's about memory.
There are a few competing explanations, and they don't cancel each other out. The oldest one is arithmetic. The French philosopher Paul Janet floated it back in 1897, and William James liked it too: each new year is a smaller fraction of the life you've already lived. A year is a fifth of a five-year-old's whole existence. By twenty-five it's four percent. By fifty it's a rounding error. Same 365 days, shrinking share of the pie.
There's a more physical theory too. The engineer Adrian Bejan argues that as we age we process fewer mental "images" per second. Our eyes and brains take in visual information more slowly than a child's frantic, wide-open intake. Fewer frames, so time seems to flick past. A child watches the world at high frame rate. Adults run on power-saver mode.
Both of those are real, and both are mostly out of your hands. You can't get younger. You can't force your visual cortex back to age six. If that were the whole story, this essay would just be bad news with citations.
But it's not the whole story.
routine is the actual thief
The explanation I keep coming back to is routine, because it's the one you can do something about. Cindy Lustig, a psychology professor at the University of Michigan, puts it plainly: new and exciting experiences are what set days apart in our minds. Repetitive days blend together and, in memory, feel like they passed in an instant. Your brain lumps the samey ones into a single blurry file.
And twenty-something life is engineered for sameness in a way earlier generations never had to fight. Same commute, or same walk to the same desk. The same six apps in the same order before you're even fully awake. The same feed refreshing the same faces. You can go weeks where the only thing distinguishing Monday from Thursday is which show you fall asleep to. Your calendar looks full. Your memory files it as one day, copied and pasted forty times.
The neuroscientist David Eagleman has a sharp way of describing what's underneath this. He argues the brain lays down much denser memories for novel or high-stakes events, and when you replay a period later, that density of recorded detail is what your mind reads as duration. A richly recorded stretch feels long in hindsight. A thinly recorded one feels like nothing. It's why two weeks somewhere new can feel longer in memory than the three routine months that followed, even though the months held far more hours.
Think about two summers. A childhood one: first time in the ocean, a bike wipeout that scared you, some kid down the street who taught you a card game, the specific smell of someone else's house. A hundred first-time things a day, every one getting its own vivid entry. It felt like it lasted a geological age. Now think about last summer. Ninety-two days, same as the childhood one. Gone. Filed under "summer," no subfolders.
Same length. One was recorded in high definition. The other was barely recorded at all.
you don't need a bigger life, you need to mark the one you have
Here's where it turns hopeful. A 2025 study in Memory & Cognition found that the thing most tied to feeling the past decade sped by wasn't how much autobiographical memory you'd piled up over the years. It was how you encode new information now, the active work of taking in and processing what's actually happening. The psychologist Steve Taylor makes a similar case: time speeds up when we have fewer genuinely new experiences and our perception goes dim and automatic, and it stretches back out when we introduce novelty and pay real attention, because that gives the mind more to process.
Which is a relief, honestly. Because the obvious reading of all this, go have wilder experiences, is exhausting and a little suspicious, like a life well-lived should be measured in passport stamps. Not everyone can quit and go to Lisbon. Not everyone wants to.
The better news is that novelty isn't the only lever. Attention is. A day doesn't have to be dramatic to get recorded richly. It has to be noticed. The reason last week vanished probably isn't that nothing happened. It's that nothing got marked. Nobody asked you about it, including you.
This is why the simplest thing does more than it has any right to: describing your week out loud, to someone or something that's actually listening. When you narrate what happened, you force your brain to encode it instead of letting it dissolve into the general blur. You take the picture on purpose. The small argument you patched up, the walk where you finally understood something, the ordinary Wednesday that was quietly fine. Said out loud, they stop being interchangeable Tuesdays and become a week you can find again later.
That's a good part of why we built Joice: you talk for a few minutes about what your days held, something gently asks what it was like, and the week gets recorded instead of composted. Not because your life needs to be more impressive. Because it deserves to be remembered at the resolution you actually lived it.
Try this before the year closes out on you. Don't reach for the highlights. Reach for last Thursday. What did it hold, hour by hour, if you're honest? The first time you do it you'll probably come up mostly blank, and that blankness is the whole point: proof of how much has been slipping by unrecorded.
Do it a few weeks running and something shifts. Not the clock. The clock's fine. What changes is that October stops arriving like a stranger. You'll have the receipts. You'll be able to say, actually, here's where the year went, and mean it. Time didn't get faster. You just started taking pictures again.