Ask HN: How do you become smarter?

81 points by BigHatLogan ↗ HN
An odd question, but something I've never really considered until lately.

How does one become smarter? I'm in my early 30s right now. I can feel my brain waning here and there--things that I used to pick up quickly are now taking a long time to settle in. I'm wondering why that is.

That seems to concern maintaining one's intelligence. But what if one wanted to improve it? How can I go about doing that?

Thank you.

78 comments

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Don’t worry, you get wiser. Instead of chasing the latest IT fad or whatever, you realize it’s mostly something regurgitaded or rebranded and just smirk. Even if it is new, it will be old in a few years.

Travel, read books, do things with your hands. The average iphone user is losing IQ points pretty rapidly and they’ll be on meds soon enough to not be any form of competition.

Yeah, I do wonder how much of this is "smartphone-induced" sometimes. I can almost "feel" my brain growing increasingly sluggish by the day...maybe a break is in order.
More on this point, I think it’s important to realize that a lot of technology (like phones) puts you in a “reaction” loop as opposed to your brain’s natural state of “self-entertainment?” for lack of a better term. Thinking is a muscle, you have to work it and looking at memes, tweets, api docs, etc is all fundamentally just reacting to something. Go plan something, design something, anything. But all this comes after sleep. Fix your sleep first if necessary.
Read heavy books and scientific papers, bang your head against a (metaphorical) wall a lot. Follow intellectual trails and be willing to get seriously lost.
Heavy books and scientific papers about anything I find interesting? Or about things in my work domain?
Things you find interesting, which may or may not coincide with work.
> I’m in my early 30s right now. I can feel my brain waning here and there--things that I used to pick up quickly are now taking a long time to settle in. I'm wondering why that is.

“One more new thing” is relative. You aren’t starting from the same position this time as the last, or the first.

That’s a good thing.

This internet stranger suspects what you’re calling intelligence is maybe something else. Rest? Motivation?

Don’t forget that your brain isn’t in a vat. (Probably. Maybe. No promises, not getting all philosophical here.) Take care of the whole organism.

You may be onto something here--I definitely have slipped in taking care of the whole organism. My sluggishness might be a symptom of that.
I feel like there are too many definitions of "smart" for me to give a useful answer, and people are too different anyway so what worked for me might not work for you, but I'll just write down what helped me. You could probably start by asking yourself what you really want to achieve, and why, and it might help you more than anything I am writing here.

My first instinct was to tell you to read books, or listen to audiobooks, that you don't normally read. They can introduce you to new ideas, and imho that's a great way to start. By reading Heinlein, Ursula K Leguin, Ian M Banks or countless others and then thinking about them, I feel like I developed new frameworks that helped me think differently than before.

As an added bonus, they improved my vocabulary, which helped me with expressing new ideas.

As a second step, discussion about these books often brought even more insights, and here the improved vocabulary came in handy (even more so as I am ESL).

I found that tips like "never be the smartest person in the room" can be useful impulses (pushing you out of your comfort zone and meeting new people in that example), but should be taken with a huge grain of salt. In addition to that, most self improvement books and podcasts seem to be little more than distilled survivorship bias, so I've completely given up on them, but ymmv.

I hope that might point you in one possible direction, but in general I wouldn't worry too much about your brain waning in your thirties, I'm also at that age and have at times felt similarly. I'm pretty sure most of that is just our perception anyway ;)

Appreciate it. I was thinking of reading more books, too, but it might be better to think about what I want to achieve, as you mentioned. It's all quite vague in my head. I just feel a lot more mentally sluggish / sloppy than I used to when I was younger. I get the feeling my 20-year-old self would run [mental] circles around me. Who am I kidding--physical ones too!
One more thing to add to your comment: write about what you think you know well, or else try to teach somebody about what you know. You will quickly identify your limits and then you can go back and fill in the “blanks” of your understanding.
Without getting into the weeds of trying to define intelligence: just go into more detail/deeper of what you already know. That’s all the education system really does anyway after a certain point.

Edit: whenever you come across something you don’t understand/know - learn more about it. It’s a journey not a destination.

Thanks. That's good advice. I have noticed a tendency to shy away from things more often lately--when I'm diving into one of our legacy systems at work, for example, if I come across something I don't understand, I immediately start to get frustrated, panicked, and look for a way to get this assignment off my back. Spending a bit more time not knowing, and more time diving in, might be the better approach here.
Sleep well. Sleep is critical for structural learning (insight, generalization, etc.). Your hippocampus is theorized to randomly walk through memories to build these structural connections in your cortex during slow wave sleep.
The main way is increasing your general level of health. Physically, emotionally and mentally. Reading more doesn’t make you smarter, it just makes you more knowledgeable. Imagine if you had the level of acuity and liveliness you did when you were a child, but the maturity and experience you have now. People say that humans have an intellectual peak in their twenties, well that’s only because most people’s health starts going downhill at that point. Excessive stress, mental overstimulation, emotional problems, etc. You remove these, there’s no doubt you’ll have a clearer and faster mind.
Well said! I was thinking something along these lines--that there must be some sort of correlation between physical health and mental sharpness. Maybe that's why professors are typically fairly lean.
I’m in early 30s and I do think health is crucial but you’re kinda missing the big picture. I feel like I know 100x more than I knew 10 years ago. I am also much more experienced in many fields, not only work/programming but cooking, driving, swimming, talking to people and so forth. The point is I’m good at many things I wasn’t good in my 20s. But I haven’t improved in my 20s only, I’ve been upgrading myself or so to say every day since day one. As cliche as it sounds. Therefore I just know my weak spots much better than ever before and I realize I forget about this and that but not due to my aging brain but mostly to my vast knowledge and experience. Also my self awareness is on another level and I’m sure I was dumber even 5 years ago but I couldn’t see it back then. It’s like going back to 1999, looking at Windows 98SE and thinking interfaces couldn’t get any better.

Also I think kids change everything. Got none of my own but it’s so hard to focus when you have to think for them as they do stupid stuff all the time. Once went to play squash with my 10 year old cousin and he literally lost his shoe, then a towel then a key to his locker. All within an hour. And many people will tell you they were smarter as kids.

Reading more doesn’t make you smarter, it just makes you more knowledgeable

There are signs from GPT family progress indicating otherwise.

GPT, so far, is evidence for the knowledgable but not smart assertion.
After spending many hours with GPT-4 I disagree.
Try to learn something difficult. Something that you really struggle with and find mentally exhausting. Preferably something useful but it’s not a waste of time to try learn something that you may never use. For example, if you are not naturally talented at math try to fundamentally understand general relativity. Or learn a musical instrument if you are not musical. This may not work for everyone but it works for me. It has reversed the arrow of time for my brain for sure.

Take your time, months or years if you need to. Learn different things at the some time. Mix it all up in there and let it brew while you sleep.

Much of philosopher Elliot Temple’s work is about how to think better. That’s a big topic which includes, among many other things:

- becoming aware of and fixing mistakes (https://www.elliottemple.com/essays/life-overreaching-correc...)

- identifying and working with bottlenecks (https://criticalfallibilism.com/most-factors-arent-borderlin...)

- managing your error rate for faster progress (https://fallibleideas.com/gradualism)

- becoming more honest (https://www.elliottemple.com/essays/lying)

- evaluating ideas using binary criteria (e.g., does idea X have important property Y), as opposed to continuous criteria (e.g., how good is idea X on a scale of 1-10) (https://yesornophilosophy.com)

Temple put a lot of thought into what might be called interventions for adults who want to improve their thinking (such as OP). One of those interventions is learning to speedrun a video game (https://curi.us/2198-mario-odyssey-discussion). Temple argues that many of the things you learn as part of speedrunning can help you learn to think better in general.

Learn (self-)hypnosis. You have lots of brains, so to speak, you just have to organize them coherently.

Also, "Augmenting Human Intellect: A Conceptual Framework" SRI Summary Report AFOSR-3223 by Douglas C. Engelbart, October 1962 https://dougengelbart.org/pubs/augment-3906.html

One thing I've noticed is that it takes a certain energy threshold to do something. At 30s, first, your internal energy level have dropped. You might also be more senior at work and stuck with higher responsibilities and longer hours, or occupied at home - caretaking parents, young children. Einstein didn't make as many groundbreaking discoveries in his latter years; some attributed this to being tied down with more draining work.

Energy management is crucial. It's no longer about time management. When you do have energy, early in the day, that's when you want to want to focus it on self-improvement. Don't try to learn too much late in the day. Allocate plenty of rest periods; many of the smartest people around now don't do anything with their low energy times. It's usually better to sleep early or go for a run instead of forcing yourself to learn more.

> Einstein didn't make as many groundbreaking discoveries in his latter years; some attributed this to being tied down with more draining work.

There's only so much that one person can do in a lifetime. Humans are not infinite wells of creativity.

Or let's put it this way: which post-Einstein groundbreaking discoveries do you think he should have made? Why does he personally have to discover everything in physics?

Why didn't the Beatles write Stairway to Heaven?

Doing one great thing is hard. Doing several great things is even harder. There's no reproducible method, no routine. You can't just crank out inspiration on an assembly line.

I am thought Einsteins lack of significant discoveries after relativity was due to kind of bad luck. He happened to get stuck on thinking qm wasn't right? I feel like that happens alot, you could be brilliant just had lived with the wrong circumstances. Maybe he woukd have done more if he was accepting of qm?
Actually, I might have been mistaken on this. Einstein got in most of his contributions by 56 and didn't plateau much earlier as initially calculated.
Follow instructions from Hacker News. That is definitely how one might adjust their intelligence.
I am also in my early 30s and noticed the reverse. I can now understand more complex subjects (like advanced probability or functional programming) that I had trouble conceptualizing when I was younger. I am not sure if it's the age factor or the fact that I have been exposed to other things and the bigger picture is becoming clearer.

My own advice would be to not do anything you won't be doing now. There is no "smarter" being. A fish is smarter than you in the ocean but I don't think that's the kind of smart you want. If you want to improve your "global" smartness or understanding, then try to explore other languages.

You can, for example, learn Arabic or Chinese. Learning Spanish is cool but if you only speak English you have been already exposed to a latin language. You can, for another example, learn Rust if you have been programming with Python/TypeScript. If you have been focused on programming for your entire career, another useful thing you can learn is psychology.

Notice all my advice converge to the same idea: learn a new way to communicate.

Vitamin B (all types), particularly if you drink caffeine which is a vit B agonist, exercise and get plenty of sleep.
it’s amazing how much younger and sharper exercise, proper diet, and good sleep can make you feel. or at least, that’s been my experience. i was astonished when i realized it wasn’t as much “getting old” as it was ”shit habits” that i was feeling.
I guess there are lots of different interpretations of what it takes to be "smarter".

Personally I've learnt several foreign languages to the point where I can read classic novels in one of them. Different cultures and idioms help me see things in a different light.

I have also dabbled with woodworking, gardening / hydroponics, electronics / embedded systems. Read more widely in the fields of chemistry, biology and linguistics. Also read biographies of notable people.

Do I feel smarter? Not really. The more I learn and discover the more I realize all the things that I know nothing about.

Language learning is mostly hard work and perseverance and time? Which I'm pretty sure is what "smart" usually is.
Read all kinds of university textbooks. First read introductionary layman textbook, if you feel interesting, continue to go deeper, but not too deep.

You don't have to remember everything. Just knowing there exist such ideas or facts is enough. Usually 1000 pages is enough to get a fair proficiency.

You need a ton of factual information across broad domains to be smart.

For free textbooks:

https://openstax.org/subjects/science

Maybe these aren’t super advanced tips, but they’ve worked for me:

- eating certain foods, particularly blueberries. There is a lot of research on their effects. I don’t know if it holds up, but anecdotally I do feel a bit “mentally clearer” after having blueberries daily for about six months.

- Use a spaced repetition system like Anki. Memory is intimately linked to intelligence and there is no better way to improve one’s memory than SRS.

I’m also on the blueberry+SRS regimen haha, also go outside and walk, normalize your sleep patterns, hydrate, socialize. These are all easy ways to slow the degradation.
Yep, water, sleep, fitness, and being social are all very important too.
Improve your health, like many others have said.

Habitual brain exercises work too. Crosswords, mental math, etc.

Instead of trying to become smarter, I've been focusing on trying to be less stupid.

Gurwinder Bhogal goes over this a bit on episode #602 of the Modern Wisdom podcast at roughly 15:00. https://chriswillx.com/podcast/

Some things in particular:

- Focus more on writing and thinking clearly.

- Try to think more slowly. https://sive.rs/slow

- Avoid posting inane/uninteresting stuff on social media.

- Avoid engaging in debates.

- Avoid ideologies, groupthink, and assumptions.

- Avoid correcting people on the Internet.

- Avoid taking things at face value (eg. news and opinions)

- Avoid "poseuring". I am a strong generalist with a decent knowledge of and passion for a lot of different things. I'm the guy people around me come to for tough technical things. I probably take too much pride in that. When someone asks if I know subject $foo well, and I know a little about $foo, I tend to answer in the affirmative. Most of the time, this works out and through intelligence and luck, I figure it out. Some of the time I am wrong and I look pretty dumb.

- Avoid being unkind to others.

Copying a quote from that "slow thinking" post because I hadn't seen it and I think is valuable:

> People say that your first reaction is the most honest, but I disagree. Your first reaction is usually outdated. Either it’s an answer you came up with long ago and now use instead of thinking, or it’s a knee-jerk emotional response to something in your past.

Fascinating trying to think of questions people might ask, how I might respond, and why.

As a run-of-the-mill mathematician and programmer, what I've found the most helpful is studying philosophy.

During my teens I went through an existential crisis, and the dread I've felt every day drove me to start reading philosophy books. I found Nietzsche, and while his books were extremely hard to read (took me years to actually go through them), I feel that it's shaped my mind in a universal way, giving me ability to "see through" all the abstractions and arbitrary rules set by various actors in this world, and focus on the fundamentals. Russell and Wittgenstein were the follow-ups, which further developed the sort-of-nihilistic view of Nietzsche into something that made more sense.

I feel it has helped me a lot with both general "smartness" and mathematics, so I'll recommend it too. Read philosophy.

Does Jordan Peterson helps?
Jordan Peterson is impressingly insightful, and a great motivational speaker.

I wouldn't call him a philosopher, because philosophy to me must have a timeless element that is necessarily detached from any specific time or society, and Jordan is first of all a clinical psychologist, which makes his experience inherently tied to the current society through his practice with patients.

That being said, we are living in the current day, I think his lectures and books are very helpful for anyone struggling with the meaninglessness of modern life.

I also personally dislike his usage of Christian mythology and ethics in presenting the "how-to" of life. It might be useful as a narrative tool, but Christianity in itself is extremely toxic life-denying philosophy.

> Christianity in itself is extremely toxic life-denying philosophy

Hmmm, you lost me there. Are you talking about the politics and practices of current American evangelical right wing Christians? I'd agree with you there.

But in light of how Peterson digests Christianity I'd say it's the exact opposite of your claim. "Pick up your damn cross." and "Clean your room." as exemplars of such.

Christianity is a philosophy that is founded on guilt. The cardinal sin represents a general disdain of all humanity - everyone is guilty for being alive, for being sons and daughters of women and men. Everything else is a consequence of that disdain.
While sin plays a crucial role in Christian doctrine, it does not mean that everyone is guilty for being alive or that Christianity promotes disdain for humanity. Christianity recognizes the inherent value and worth of every human being, as created in the image of God.

Furthermore, Christianity offers hope and redemption through faith in Jesus Christ, rather than promoting guilt. Sin refers to actions or thoughts that go against God's will, which can harm individuals and society. However, forgiveness and transformation are possible through faith in Jesus Christ.

Romans 3:23-24

Yeah, Christianity is also full of internal contradictions, and has no strong framework in which one can logically cruise through it. One more reason why I dislike anyone using it in philosophical discussions.

> Christianity offers hope and redemption

Hope and redemption is only necessary if you think all humans are guilty by being alive and therefore hopeless.

The poster said "philosophy", not "quacky neo-theologian mysticism from a psychology professor drifting out of his lane while coming off of benzos".
Nietzsche was a filologist, and had a problem with opium.

If you want to criticize someone's philosophy, you need better arguments then ad-hominem.

All the research indicates you are as smart as you are born according to measures of intelligence in psychology. You can boost your intelligence up to 10 IQ points with intense practice but that is extremely temporary.

What you can do is instead learn to enhance your personality as such results yield long term benefits (sometimes permanent). For example conscientiousness is negatively correlated with intelligence but boosting your conscientiousness increases your capacity for self-improvement (including increased learning and thus intelligence). Same with lowering your neuroticism. Expanding your openness is directly correlated with increasing both intelligence and happiness.

Perhaps the single most important short term thing that yields long term changes to the mind is to improve yourself physically. Becoming athletic results in short term measurable increases to intelligence.

The single greatest differentiator is becoming more physically durable. When you are less prone to injury, heal faster, and physically tougher you are less risk adverse. Your neuroticism drops to near 0. This alters everything about how you perceive the world including what you do with your time, your interests, and your relationships with other people. It directly affects what and how you learn and the paths you take to accomplish work tasks, even something as boring as writing code.

Unfortunately physical durability is largely fated to good genetics and good diet. The maximum soft tissue healing rate for compound injuries in humans is about 70 hours (it’s also the maximum infectious rate for microbes in humans). Some people have that near invincibility naturally like Wolverine in the comic books (not the movies). Some people have unbreakable bones (soft bones at 1.5-8x higher density). Some people can naturally produce vitamin D in the dark without need for sunlight or risk of depression (gingers).

While the research does point to general intelligence being largely fixed I find this to not be true in my own personal experience. I find that this kind of fixed belief, plus other beliefs like “I’m not good at this, or I’m not good at that” actually drag down performance. Of course, if we’re 4“11’ then we’ll never play in the NBA, but I mean beliefs like “I’m not good at math” or “My IQ is only so and so, therefore my intellectual ceiling is this”. I truly believe that we can increase our intelligence by 1 to 2 sigma (15-30 IQ points) if we make an effort to train not only our physical heath, but also emotional health, mental health and finally spiritual health. For me, it was realising that so much of my brain power was tied up in unresolved moments of the past, poor diet and exercise. With those out of the way, as well as some meditative exercises, I feel so much clearer than I was in the past.
Continuously taking on more challenges; if you don't push the boundary of your capabilities, one stagnates.

Incrementally increasing risk appetite as a mental exercise

Ensuring "skin in the game" (when there's something to lose, I tend to be more "awake")

Focus on personal conduct (rather than merely absorbing "information"; right practice makes me better, not just the knowledge of what to practice)

Becoming accountable, pledging results, and putting 100% efforts

Also, for inspiration, pick some "extreme" fields to study: mountaineering, Olympic level training, etc

Stop using following things:

- Phone

- Social media

- Online games

- Sugar

Start doing following things:

- Eat + Sleep + Exercise well

- Get involved in local community, devote time with family and friends

- Read books

- Enjoy life