You know exactly where you were. The kitchen with the radio on. The hallway outside a lecture room. The car, stopped at a light that stayed red too long. When the big news arrived — the public tragedy, the phone call that split your life into before and after — the moment seemed to burn itself in whole: the light, the weather, the exact words. You could swear to it.
Psychologists have a name for these recollections: flashbulb memories. And after nearly fifty years of studying them, the field has arrived at a conclusion that feels almost rude. The memories you would swear to are, on average, no more accurate than your memory of an ordinary Tuesday. What makes them special is not their fidelity. It is your confidence in them.
Where the Flashbulb Idea Came From
The term was coined in 1977 by Roger Brown and James Kulik, who asked people what they remembered about learning of John F. Kennedy's assassination. The answers were strikingly detailed and strikingly similar in structure — where I was, who told me, what I felt, what happened next. Brown and Kulik proposed that shocking, consequential events trigger a special neural mechanism, something like a biological camera shutter, that prints the whole scene at once. They even gave it a name: the “Now Print!” mechanism.
It was an elegant theory, and it matched how these memories feel from the inside — crisp, photographic, permanent. There was just one problem. Brown and Kulik had no way to check whether the vivid accounts were true. They had collected people's memories years after the event, with nothing to compare them against.
To test the theory properly, you would need to catch a shocking event as it happened, record people's accounts immediately, and then come back later to see what had changed. In January 1986, the psychologist Ulric Neisser got his chance.
The Morning After the Challenger
The day after the space shuttle Challenger exploded, Neisser and Nicole Harsch had students fill out a questionnaire: where were you when you heard, who told you, what were you doing, how did you feel. Then they filed the answers away.
Two and a half years later, they asked the same students the same questions — and also asked how confident they were in each answer.
The results became one of the most cited findings in memory research. The students' accounts had drifted dramatically. People who had originally heard the news from a classmate now vividly remembered seeing it on television. Settings changed, companions changed, whole scenes were swapped out. On the researchers' accuracy scale, the average score was low, and about a quarter of the students got essentially every major detail wrong. Their confidence, meanwhile, sat near the top of the scale.
The most unsettling part came when Neisser and Harsch showed students their original handwritten questionnaires. Faced with their own accounts from the morning after, some students simply refused to accept them. The vivid current memory felt truer than the ink. They trusted the flashbulb over the evidence of their own hand.
Confidence Is Not a Signal
You might object that the Challenger students were simply forgetting, the way we forget everything. That is exactly the point — and a later study made it precise.
After September 11, 2001, Jennifer Talarico and David Rubin asked students to record two memories: how they learned of the attacks, and an ordinary event from the same few days — a party, a study session, a meal. Then they tracked both memories over the following weeks and months.
The flashbulb memories decayed at the same rate as the everyday ones. Details dropped out and errors crept in on the same schedule. Only one thing distinguished the 9/11 memories: people's ratings of their vividness and their confidence stayed high, while their faith in the ordinary memories sank realistically. In other words, emotion doesn't preserve a memory. It preserves your belief in the memory. Vividness turns out to be a feeling about a recollection, not a property of its accuracy — and the two come apart more easily than intuition allows.
Long-term follow-ups of 9/11 memories found another pattern worth sitting with: most of the distortion happens early, within the first year, and then the altered version stabilizes. People don't keep drifting further from the truth. They settle on a wrong version and repeat it, faithfully, for decades.
Why Vivid Memories Drift
None of this means your mind is broken. It means memory is doing what memory does: reconstructing rather than replaying. Each time you recall an event, you rebuild it from fragments, and the rebuild is shaped by everything you now know and every version you have told since.
Emotional events are especially vulnerable to a specific trade-off. Strong emotion tends to sharpen memory for the central gist of an experience — the fact that it happened, roughly what it meant — while doing little for the peripheral details that make a memory feel like footage: the room, the clothing, the sequence. But when you retell the story, your narrative instincts quietly fill those gaps. You import the television footage you watched later. You move yourself somewhere more fitting. You tighten the timeline so the story lands. The additions feel identical to the original, because by the third retelling, they are the original — that is the version your brain now stores.
And because the event mattered, you retell it more often than any ordinary day, which means a flashbulb memory gets more chances to be revised than almost any other memory you hold.
This Isn't Just About Historic Tragedies
It is tempting to treat this as trivia about national disasters. But the same machinery runs on the personal scale, where the stakes are more intimate: how you and your partner met, what was actually said in the argument, the day the diagnosis came, the last conversation before a move or a death. These are the flashbulbs of a private life — emotionally loaded, retold often, checked never.
The research suggests two habits worth adopting. The first is humility: when you and someone you love remember the same vivid moment differently, the honest position is that you are probably both wrong in places, and certainty settles nothing. The second is more constructive: the only version of an event that escapes revision is the one recorded before the retellings begin. The Challenger students' morning-after questionnaires were unremarkable documents — a few scrawled sentences. Two and a half years later, they were the only reliable witnesses in the room.
Keeping a Record Your Future Self Can Trust
You don't need a research protocol. You need a contemporaneous account — written the same day or the next morning, while the peripheral details still exist to be captured.
Write what happened before you write what it meant; interpretation ages fine, but facts are what drift. Keep the details that feel too small to matter — who was in the room, the weather, the exact phrase — because those are precisely what memory will later replace. Date everything. And record your uncertainty honestly: “I think she called around noon” is more valuable in ten years than a confident guess, because it tells your future self which parts to lean on. A plain, slightly boring account written today will outperform your most vivid recollection of the same day written next year. That is not a poetic claim. It is one of the most replicated findings in the study of autobiographical memory.
The Version Written That Night
This is, in the end, the quiet case for writing your days down as they happen: not because your life needs documenting like a news event, but because you are the only witness to most of it, and the witness's memory is editing itself. Lore is built around that idea — a few minutes each evening to tell today's story while it is still today's, so that the version you keep is the one that actually happened, small details and all. Years from now, when the vivid retelling and the written page disagree, you'll have what the Challenger students had: your own hand, telling you the truth. If you'd like a gentle way to start, Lore is at lore.lumenlabs.works — every day tells a story, and the best time to write it down is tonight.