In the 1920s, a Moscow newspaper reporter was reprimanded for not taking notes at meetings. He didn't need them. He could repeat the whole briefing back, word for word. His editor sent him to a psychologist named Alexander Luria, who spent about thirty years studying him and found the limits of this man's memory never showed up.

The reporter was Solomon Shereshevsky, known in Luria's book The Mind of a Mnemonist simply as "S." Give him a long table of numbers, and he could recite it forward, backward, or diagonally. He could do it years later, too. For S., every sound seemed to carry a color, a taste, a texture, and those extra sensations pinned each item in place.

He was not happy. He had a hard time understanding a paragraph, because the details kept crowding out the point. He had trouble recognizing faces, because a face changes with every expression and each version registered as a separate thing. Luria wrote that S. tried to forget by writing numbers on paper and burning them, hoping the ritual would release them. It didn't.

Most of us spend our lives wishing we were more like S. His story suggests we have it backward.

The quiet shame of forgetting

If you've ever walked out of a meeting unable to recall what was decided, or blanked on a book you loved, you may have felt a flicker of something close to shame. As if your mind were leaking. As if other people, somewhere, were holding on to things properly.

So here is the plain answer to the question that sends many people searching at night: yes, forgetting is normal. It isn't a malfunction at the edge of an otherwise reliable system. It is a core operation of memory, and the system seems built around it.

The Argentine writer Jorge Luis Borges got there through fiction. In his story "Funes the Memorious," a young man who remembers everything is unable to think. "To think," Borges writes, "is to forget differences, to generalize, to make abstractions." The line has aged well, because the science points the same way.

Memory is tuned to what you'll probably need

In 1991, psychologists John Anderson and Lael Schooler published an influential analysis of how memory's pattern of forgetting compares with the pattern of the world. They looked at real-world data, such as how often words show up in newspaper headlines, in speech directed at children, and in a person's email, and asked how likely a given item was to be needed again after a gap of time.

The finding was elegant. The statistics of how information recurs in the environment resemble the curves we see in human forgetting. The longer something goes unused, the less likely you are to need it, and memory seems to lower its availability accordingly.

The idea, called rational analysis of memory, is that your mind isn't failing to keep everything. It is making a running bet about what will be useful. Things you've met recently, frequently, or in a pattern that suggests a need get kept near the surface. One-off details from a Tuesday fall away.

That is a strategy, not a defect. It's only a poor strategy when you know something the bet doesn't: that this particular fact will matter in six months, such as a vocabulary word or a drug dosage, even though nothing in your daily life will bring it up.

What forgetting buys you

Neuroscientists Blake Richards and Paul Frankland argued in a 2017 paper in Neuron that the goal of memory is not to transmit as much information as possible through time, but to help you make good decisions. On that view, forgetting does real work.

It helps in at least two ways. First, it lets you generalize. If you recalled every single dog you've met in full detail, you would struggle to form the useful idea of "dog." Letting the incidental specifics fade is how the pattern emerges. This is S.'s problem in reverse.

Second, it reduces interference, the clutter of old information competing with new. Your old phone number, the previous parking spot, last year's password: if they stayed as sharp as the current ones, you'd spend constant effort figuring out which is which.

There's also a rarer population to consider. A small number of people, studied since 2006 and described as having highly superior autobiographical memory, can recall huge numbers of days of their lives in detail. Their abilities are real and well documented. But the research hasn't painted them as simply luckier than the rest of us, and some describe the constant flood of recollection as intrusive.

Where this advice gets misused

None of this means you should shrug when you forget something you wanted to keep. The point is narrower and more useful: forgetting is the default, and memory keeps what gets used.

That has a practical consequence. Your mind can't tell the difference between "unimportant" and "important but rarely rehearsed." It only sees the pattern of use. A friend's birthday, a concept from a course, a language you studied for two years: if nothing in your life retrieves them, the bet quietly goes against them.

So the question stops being "why can't I remember?" and becomes "have I given my mind any evidence that this matters?" That is a question you can act on.

Your next moves

You can't turn off forgetting, and you wouldn't want to. But you can send better signals about what to keep. Here are some ways to do it today.

  • Sort what you're afraid of forgetting into two piles. Take five minutes with a piece of paper. Pile one: things that must live in your head (a foreign language, an exam topic, a professional skill). Pile two: things that only need to live somewhere (appointments, passwords, receipts). Pile two belongs in a calendar or a notes app. Don't spend memory on it, and stop feeling guilty about it.
  • Pick one item from pile one and test yourself tonight. Close the book and write down everything you can recall about it, without peeking. Retrieval is the strongest signal you can send that something is needed, and a miss is useful information about what to look at next.
  • Schedule the second retrieval before you finish. Don't leave it to chance. Put a reminder a day out, then a few days, then a week. Items you meet again after some forgetting set in better than items you review while they still feel fresh.
  • Write one sentence of generalization. After learning something, finish the line "The pattern here is..." in your own words. This is the thing forgetting helps with when you leave it alone, but it stays more available if you've made it explicit.
  • Let one thing go on purpose. Choose a low-stakes item you've been rehearsing from guilt, like an old to-do or an article you'll never reread, and delete it. Notice that nothing bad happens.

What a good memory actually looks like

S. had every detail and couldn't hold onto the meaning. Most of us have the opposite complaint, and it is the more livable one. A healthy memory is selective, and it can be taught what to select.

That is where a tool like Recall fits in, and only there. If the few things you truly need to keep are being quietly outvoted by a busy life, spaced repetition is simply a way of casting the vote on their behalf: Recall uses the FSRS algorithm to bring each card back near the moment you'd otherwise lose it, so you review less and keep more. It imports your Anki and Quizlet decks and works fully offline. If that sounds useful, you can look at it at recall.lumenlabs.works. If not, the five steps above will do most of the work with a pen and a calendar.