Can You Be Happy Without Knowing What You’re Missing? Curiosity After 50 [Final Part]

“I’m already 50. What’s the point of learning something new now?”

You’ve probably heard someone say that. Perhaps you’ve even said it yourself.

Fair enough. You can enjoy television, eat good food, and lead a perfectly satisfying life without constantly hunting for new knowledge. Sometimes, frankly, ignorance really is bliss.

But there’s a question that has always bothered me.

How can you decide that something isn’t worth knowing when you have no idea how much you might enjoy it?

And another thing: does curiosity really fade away as we get older?

When I looked into the research, I found a 2025 study that challenges a familiar assumption about aging. It offers both an uncomfortable question and a surprisingly encouraging answer for those of us past middle age.

Does Curiosity Decline With Age? What a Study of 1,218 Adults Found

On May 7, 2025, researchers published a study in PLOS ONE examining curiosity among 1,218 adults in the United States, aged 20 to 84.

Rather than treating curiosity as a single personality characteristic, the researchers examined two distinct forms.

Trait curiosity describes a person’s general tendency to seek new information and experiences. It’s the habit of wanting to learn about all sorts of things, even without a specific question in mind.

State curiosity, by contrast, is the desire to know something that arises in response to a particular question or situation.

For example, you might have little interest in automotive engineering. But someone mentions that a Japanese sports car from the 1980s could steer its rear wheels, and suddenly you want to know how on earth that worked.

That’s the kind of situational interest the second measure was designed to capture.

Participants completed questionnaires about their general curiosity and were also presented with 63 trivia questions covering subjects such as history, science, geography, and animals. They rated how curious they were to learn the answers.

Now comes the interesting part.

Type of Curiosity	Correlation With Age	Observed Relationship
Trait curiosity	-0.18	Lower scores tended to accompany greater age
State curiosity	+0.16	Higher scores tended to accompany greater age

These figures are correlation coefficients, not percentage changes. A value of -0.18 does not mean curiosity declines by 18%, nor does +0.16 mean it increases by 16%.

The striking point is that the two forms of curiosity were associated with age in opposite directions.

People who were older tended to report somewhat less general curiosity, yet showed greater curiosity about the answers to specific questions.

The researchers also conducted an exploratory analysis suggesting a curved pattern in state curiosity: lower levels around middle age, followed by higher levels among older adults.

That additional analysis was not part of the original preregistered predictions, however, and requires replication. It would be a mistake to declare that everyone hits a curiosity slump in their 40s or 50s.

Growing older may be associated with less interest in exploring everything, but it doesn’t necessarily mean losing the urge to find answers when something genuinely catches your attention.

There’s another important limitation. The researchers compared different people of different ages at one point in time. They did not follow the same individuals over several decades.

The participants were also recruited through an online study in the United States. The findings cannot automatically be applied to every person in Japan—or anywhere else.

Even with those qualifications, the contrast between the two kinds of curiosity is worth examining.

AI-generated conceptual illustration. It does not depict an actual research participant, experimental setting, or specific vehicle.

Curiosity Begins When You Realize What You Don’t Know

Why can a subject that once seemed completely uninteresting suddenly become fascinating?

In 1994, psychologist George Loewenstein proposed an influential explanation known as the information-gap theory of curiosity.

The basic idea is that curiosity can arise when we become aware of a gap between what we know and what we want to know.

Consider an old Japanese sports coupe.

If you’ve never heard of it, you might walk past without giving it a second thought. Then someone tells you its rear wheels could turn as well as its front wheels.

Wait a minute. Why would anyone build that? How did the mechanism work?

Suddenly, what looked like a piece of outdated machinery has become a puzzle.

One new fact has revealed several more things you don’t know.

Of course, this theory doesn’t explain every possible form of interest. People can become fascinated by something completely unfamiliar without first having any background knowledge.

But it helps explain a peculiar feature of learning: discovering an answer can make you aware of questions you never knew existed.

Which brings us back to the original problem.

Being satisfied with your life and having undiscovered sources of enjoyment are not mutually exclusive.

You may be perfectly happy today. That doesn’t mean you’ve already discovered everything you could enjoy tomorrow.

Sometimes, you have to look through the door before you can decide whether what’s behind it interests you.

Can You Still Learn in Your 60s? Yes, but Don’t Expect a Miracle

All right, so curiosity may survive middle age. But what about the ability to learn something genuinely new?

Researchers at the University of California, Riverside, and collaborating institutions investigated whether older adults could learn several unfamiliar real-world skills at the same time.

Across the studies, participants took on activities including Spanish, painting, photography, music composition, and learning to use digital devices.

The researchers wanted to see whether sustained engagement with multiple demanding skills could be associated with improvements in cognitive performance.

There is an important detail in the publication history.

The original research was published online in 2019, but in May 2023 the journal formally retracted and replaced it after an error was discovered in the statistical analysis procedure.

The researchers reported that some numerical results changed after correction, while their overall findings remained. The replacement paper—not the withdrawn original—is the appropriate version to consult.

That corrected paper reported six learning participants in Study 1 and 27 in Study 2. Improvements were observed in certain measures of cognitive ability.

A separate follow-up paper published in 2023 also reported that improvements in some cognitive outcomes were still detectable one year after the intervention.

Sounds encouraging. But let’s not rush to announce that learning makes the brain young again.

These studies involved small samples and had limitations in their comparison groups. They do not prove that everyone will experience the same gains, nor do they establish that such training prevents dementia.

And when I checked the actual learning schedule, another detail stood out.

In Study 1, participants took part in an intensive 15-week program. The researchers reported the following average weekly learning times:

Learning Activity	Average Hours Per Week
Classes	6.10 hours
Assignments outside class	8.18 hours
Total	14.28 hours

That’s quite a commitment.

Using the rounded weekly averages reported in the paper, I calculated the total learning time over 15 weeks:

14.28 hours × 15 weeks = approximately 214 hours.

Now compare that with someone who studies for just ten minutes a day.

At that pace, accumulating the same number of hours would require roughly 1,285 days—or about three years and six months.

That doesn’t mean ten minutes of daily learning is worthless. Nor does it mean that spreading the same hours over several years would produce the same cognitive results.

The calculation simply puts the scale of the original intervention into perspective.

The participants weren’t casually browsing an educational app whenever they had a spare moment. They were devoting substantial time to challenging new activities, including work outside their classes.

That’s the part that tends to get lost behind cheerful claims that learning will somehow rejuvenate your brain.

Age alone isn’t a reason to give up learning. But learning difficult new skills still takes time, effort, and repeated practice.

AI-generated illustration. It does not depict the actual study participants or research facility.

The Pandora Effect: When Curiosity Gets You Into Trouble

At this point, it would be convenient to conclude that curiosity is wonderful and everyone should cultivate more of it.

Unfortunately, human behavior is rarely that tidy.

In 2016, psychologists Christopher Hsee and Bowen Ruan published research on what they called the Pandora effect.

The idea is unsettlingly simple: people sometimes seek information even when finding out could leave them worse off.

In one of their experimental setups, participants encountered pens with uncertain consequences. Clicking certain pens could deliver an unpleasant electric shock.

Across four controlled experiments, the researchers found evidence that uncertainty and curiosity could motivate people to expose themselves to unpleasant experiences, even when there was no apparent benefit.

In other words, wanting to know isn’t always the same as having a good reason to know.

Now think about the internet.

A ridiculous online argument. An ugly rumor. A scandal you know will only irritate you. Yet somehow, you end up reading the entire thing.

To be clear, that particular example is my comparison, not a behavior directly tested in the electric-shock experiments.

But the resemblance is hard to ignore.

Curiosity can push us toward discoveries, learning, and enjoyment. It can also lure us toward information that accomplishes very little beyond making us miserable.

Knowledge can be valuable. That doesn’t mean every urge to find something out deserves to be obeyed.

Can You Be Happy Without Knowing What You’re Missing?

So where does that leave someone in their 40s, 50s, or 60s who has no particular desire to go back to school?

Do they really need to start studying everything?

No. The studies examined here do not support the claim that everyone must keep learning to have a happy life.

If anything, being selective about where to invest your attention may become increasingly important as time goes on.

But there’s a difference between deciding that something isn’t for you after giving it a chance and rejecting it before you even know what it offers.

Something you once considered dull might become unexpectedly interesting after you learn one small detail.

And that’s a possibility worth leaving open.

You can be happy without knowing what you’re missing. But you’ll never know whether something could have made life more interesting unless you give it a chance.

After three articles exploring knowledge, expertise, and the changing nature of curiosity, that’s where I’ve arrived.

Editor’s Note

I’ve never had much of a problem with people who disliked studying at school. That doesn’t tell me nearly as much about a person as some people seem to think.

What has always bothered me is the person who has already decided, “There’s nothing new I need to know.”

Really? Nothing at all?

I’m not suggesting we should force ourselves to become interested in every subject under the sun. I’ve got plenty of things I couldn’t care less about, and I have no intention of turning all my free time into homework.

But I was rather pleased to discover research suggesting that curiosity doesn’t simply disappear with age. Apparently, the urge to get to the bottom of a particular question may remain alive and well.

Then I found the Pandora experiments, which suggest that curiosity can get us into trouble too.

Typical human behavior. Even our desire to learn refuses to be entirely sensible.

I’m past 50, and I still regularly come across things that make me think, “Hang on. What’s that all about?”

Next thing I know, I’ve spent hours digging through old documents, technical material, or some wonderfully obscure corner of history.

Some people would call that a waste of time.

Maybe it is, in a practical sense. But I’d rather have too many things left to discover than reach the point where nothing surprises me anymore.

As far as I’m concerned, a life still full of things I don’t know is a life that’s unlikely to run out of entertainment.

As long as I can still ask, “Why on earth is that?”, I suspect the world will have a hard time boring me.

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