I like answering quiz shows.

Or at least I used to think I was pretty good at them.

Lately, I've noticed something mildly annoying. A question comes up, I know I know the answer, but I can't produce the word. I sit there staring at the TV, trying to pull it out of nowhere.

Then the multiple choice options appear.

Oh. Obviously C.

That started bothering me more than it probably should have. Is my memory getting worse? Am I just slower now? Is this one of those things you suddenly notice in your late 30s and then spend an evening Googling?

So I went down the rabbit hole (as usual).

Why multiple choice feels easier

The thing I learned is that “remembering” isn't really one operation.

There's recall, where you have to produce the answer yourself. And there's recognition, where the answer is already in front of you and you have to identify it.

Those sound similar, but they put very different demands on memory.

If someone asks me, “What's the name of the boundary around a black hole beyond which nothing can escape?”, I might know exactly what they're describing and still fail to retrieve the term.

But put “event horizon” among four choices and suddenly it's obvious.

The problem has changed. I'm no longer trying to produce the answer from scratch. I'm recognizing it.

My brain isn't literally a database, but the metaphor is useful: free recall is like having to write the search query yourself. Recognition is more like being handed a page of results and spotting the one you wanted.

That explains the very specific feeling of:

I know this.

I cannot tell you what it is.

Ah, yes. That one.

The information wasn't necessarily gone. I just couldn't retrieve it from the cue I had.

That distinction made me feel less alarmed by the whole thing.

There's even a name for one version of this: the tip-of-the-tongue state. You know you know a word, sometimes you can remember its first letter or how many syllables it has, but the actual word refuses to arrive.

Then someone says it and your brain immediately goes, yes, obviously.

Annoying, but very different from never knowing it in the first place.

Retrieval gets noisy

Of course, this doesn't mean every memory problem is “just retrieval.”

But it gave me a better mental model for some of the small failures I was noticing.

There are also a bunch of things that make retrieval harder.

Sleep is one. Stress is another. Mental fatigue probably explains more of my evening quiz performance than I'd like to admit.

After spending hours reading specs, attending meetings, keeping track of code, edge cases, browser tabs, Slack messages and whatever else is competing for attention, maybe “name this actor from a movie I watched in 2007” just isn't getting top priority.

I originally thought of this as a “full hard drive” problem. I've accumulated more information, so naturally searches take longer.

It reminded me of Inside Out, where long-term memory is basically an enormous archive of glowing memory balls. Workers wander around deciding which old memories are no longer useful and dump them.

It's a great visual, but probably not a great model of how memory actually works.

Brains probably don't simply fill up and start deleting old files to make room. The problem seems to be more complicated than storage capacity. Sometimes a memory may still be there, but the cue I have isn't enough to retrieve it. Other memories and associations can compete with it, making the thing I'm looking for harder to pull out.

Names seem especially good at disappearing this way.

For instance, I love Breaking Bad. I remember the characters, the scenes, and all sorts of random details. But recently I was trying to remember the guy who's in a wheelchair and rings the bell.

I could picture him perfectly. Couldn't remember the name.

So I Googled it.

Of course. It's freaking Hector Salamanca.

I remembered everything around the name. I just couldn't pull out the name itself.

Ugh.

Maybe don't Google it immediately

One thing I've started doing is waiting a little longer when something is on the tip of my tongue.

My old habit was:

Can't remember.

Google.

Done.

Which is efficient, but maybe not ideal if the goal is to get better at retrieval.

Trying to retrieve something is itself useful practice. So now, if I know the answer is somewhere in there, I give it a little time before reaching for the external brain.

Sometimes it comes back.

Sometimes I eventually Google it anyway.

I'm not turning trivia into a training regimen!

The part I found reassuring

The main thing I got from all of this wasn't "my memory is fine."

I can't really conclude that from a few quiz-show questions, and noticeable changes in memory that start affecting everyday life are a different thing entirely.

I also started noticing that on days when I'd slept well, recall seemed easier. Words and names came to me faster. When I was tired, I had more of those annoying “I know this” moments.

Maybe that's part of why this started feeling worse in the first place.

What changed most, though, was my definition of forgetting.

I used to think there were basically two states:

1. I remember it.
2. I forgot it.

Now I think there's a surprisingly large space in between.

Sometimes the information is there. I just can't find the key that gets me to it.

Maybe forgetting isn't always a storage problem. Sometimes it's a lookup problem.