this post was submitted on 08 Sep 2025
337 points (94.0% liked)

Today I Learned

24649 readers
394 users here now

What did you learn today? Share it with us!

We learn something new every day. This is a community dedicated to informing each other and helping to spread knowledge.

The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:

Rules (interactive)


Rule 1- All posts must begin with TIL. Linking to a source of info is optional, but highly recommended as it helps to spark discussion.

** Posts must be about an actual fact that you have learned, but it doesn't matter if you learned it today. See Rule 6 for all exceptions.**



Rule 2- Your post subject cannot be illegal or NSFW material.

Your post subject cannot be illegal or NSFW material. You will be warned first, banned second.



Rule 3- Do not seek mental, medical and professional help here.

Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.



Rule 4- No self promotion or upvote-farming of any kind.

That's it.



Rule 5- No baiting or sealioning or promoting an agenda.

Posts and comments which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.



Rule 6- Regarding non-TIL posts.

Provided it is about the community itself, you may post non-TIL posts using the [META] tag on your post title.



Rule 7- You can't harass or disturb other members.

If you vocally harass or discriminate against any individual member, you will be removed.

Likewise, if you are a member, sympathiser or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people, and you were provably vocal about your hate, then you will be banned on sight.

For further explanation, clarification and feedback about this rule, you may follow this link.



Rule 8- All comments should try to stay relevant to their parent content.



Rule 9- Reposts from other platforms are not allowed.

Let everyone have their own content.



Rule 10- Majority of bots aren't allowed to participate here.

Unless included in our Whitelist for Bots, your bot will not be allowed to participate in this community. To have your bot whitelisted, please contact the moderators for a short review.



Partnered Communities

You can view our partnered communities list by following this link. To partner with our community and be included, you are free to message the moderators or comment on a pinned post.

Community Moderation

For inquiry on becoming a moderator of this community, you may comment on the pinned post of the time, or simply shoot a message to the current moderators.

founded 2 years ago
MODERATORS
top 50 comments
sorted by: hot top controversial new old
[–] pachrist@lemmy.world 2 points 3 hours ago (1 children)

That graph is shaped like a gun.

[–] Magnum@lemmy.dbzer0.com 1 points 3 hours ago

Please shoot me with it, I cant take any more of those smart people

[–] 4RCH_U53R@lemmy.world 5 points 10 hours ago (1 children)

Pretty sure most lemmy users are up there. But now that I say that.. could very well be wrong. Sorry everyone

[–] TubularTittyFrog@lemmy.world 3 points 3 hours ago* (last edited 3 hours ago)

most replies to my comments on here seem to think their are foolproof geniuses while espousing that there is no such thing is nuance or complexity in the world. there is only good (agree with them) or bad (disagree with them).

super big-brained thinking, that.

[–] Angelusz@lemmy.world 4 points 19 hours ago (1 children)

Everyone has an opinion and nobody holds the absolute truth. Fun thing, reality is.

[–] TubularTittyFrog@lemmy.world 1 points 3 hours ago

that sounds like it's part of the homosexual/trans agenda!

[–] Juice@midwest.social 10 points 23 hours ago* (last edited 23 hours ago) (1 children)

Its at least partially a statistical trick. People of lower competence rate themselves closer to the middle, but people with high competence also do this.

I also find it hilarious how virtually everyone acts like an expert in diagnosing dunning-krueger. Like looking at a graph for a second and then repeating an academic mystification and 5-10 word snippet repeated ad nauseum is pretty fucking ironic given the subject

[–] Peruvian_Skies@sh.itjust.works 4 points 22 hours ago* (last edited 22 hours ago)

No no you see, because I have heard of the Dunning-Krüger effect on no fewer than two separate occasioms, I am a master at recognizing it in people no matter where they fall on its spectrum. You just don't understand because your overexposure to the concept has dulled your natural instincts, unlike me. /s

[–] Aceticon@lemmy.dbzer0.com 8 points 1 day ago (1 children)

As far as I can tell, we all have this, even people who are experts, it's just in different domains that those of their expertise.

[–] TubularTittyFrog@lemmy.world 1 points 3 hours ago* (last edited 3 hours ago) (1 children)

what baffles me is that so many experts just willfully refuse to apply there general intelligent to problems outside of their field of expertise in the most basic ways.

like so many 'genius' techies who can't cook or understand a sentence with more than two clauses. it's not really that hard... just break it down into the functional components like you do with your code, bucko.

[–] Aceticon@lemmy.dbzer0.com 1 points 3 hours ago (1 children)

It has been my experience that actual domain experience almost invariably beats genius-level intelligence, even that which is all the way up at the level of Einstein (so well beyond mere genius IQ).

What intelligence does bring is a faster ability to grasp things when explained and even to ask the right questions and piece a few more things together naturally than most people would, but that's still not enough for a very high intelligence newbie to beat somebody with years of expertise on a domain: a newbie doesn't just lack direct knowledge, they even lack knowledge of what are the right things to do to get that knowledge are as well as, in many domains, training to do it in a time effective way (or to put it another way, they don't just lack the answers, they even don't know the right questions to ask).

A last point: don't confuse tech domain expertise with very above average intelligence - domain expertise in a complex intellectual domain tends to look from the outside as very high intelligence but that's really an error in perception due to the unbalance in knowledge of the domain expert versus a non-expert. In my experience, there aren't that many actual geniuses (IQ of 120 or above) in Tech even if some areas of it seem to require above average intelligence to master.

[–] TubularTittyFrog@lemmy.world 1 points 3 hours ago* (last edited 3 hours ago) (1 children)

I don't. Most techies are idiots outside of anything technological.

and they overcompensate hard by trying to turn everything into a problem to be solved with a convoluted technological solution.

[–] Aceticon@lemmy.dbzer0.com 1 points 2 hours ago* (last edited 2 hours ago)

That's a general problem with domain experts in highly specialized intellectual areas: everything looks like a nail when the only tool in your toolbox is a hammer.

It also dovetails with what I wrote before and the Dunning-Krugger effect - just like everybody else, they are prone to think they know a ton about things outside their expert domain they really know little about, so come out as a idiots in those things. It doesn't help that Tech has been glorified in present day society causing a lot of people within it to have seriously inflated egos well beyond what their actual achievements would justify - you see this kind of thing in all "glamour" areas: for example in my experience lots low-level barely-making-ends-meet actors seem to think of themselves as "superior to the common man".

I like to think most people affected by such delusions about their inherent worth and capabilities get over it as they get older, after life has had the time to slapped them a couple of times.

[–] Bloomcole@lemmy.world 13 points 1 day ago (2 children)

Today?
It has been a fad for some time.
Ironically mostly used by people who think they're smart bcs they've heard of it.

[–] TubularTittyFrog@lemmy.world 1 points 3 hours ago (1 children)

smart doesn't mean anything.

[–] Bloomcole@lemmy.world 1 points 3 hours ago

It means a lot of things according to the dictionary.
You might want to look it up.

[–] StupidBrotherInLaw@lemmy.world 5 points 1 day ago* (last edited 1 day ago) (1 children)

Knowledge doesn't just diffuse into everyone's minds when it hits a fad threshold. There's still a point where one first learns about it. Shocking, I know.

[–] EddoWagt@feddit.nl 1 points 8 minutes ago

You gotta be part of the hive mind man, it's pretty cool

[–] Lushed_Lungfish@lemmy.ca 47 points 1 day ago (3 children)

I find that folks that just keep their mouths shut, do their jobs quietly, competently and correctly are far better to have on your team than the loudmouth know-it-all.

Bonus is that when the former does open their mouth you know you should be paying attention.

I think they call it "quiet competence".

[–] TubularTittyFrog@lemmy.world 2 points 3 hours ago

IME the loudmouths are mostly mouthing off about things that are totally unrelated to the problem at hand. all in some weird big to appear confident and in control.

[–] Coldcell@sh.itjust.works 11 points 1 day ago

All too common I've seen those loudmouths promoted, and the quiet competent are then talked down to about something they know far more about. Then they leave.

Middle management doesn't understand a skillset unless someone tells them directly they are skilled, it's a culture of failure.

load more comments (1 replies)
[–] hperrin@lemmy.ca 71 points 2 days ago (9 children)

The more I’ve learned about email while writing my own email server, the more I’ve realized I knew basically nothing about email when I started. Now, I’m at least somewhat knowledgeable, but god damn it’s so fucking complicated. Even something as seemingly straightforward as email has such a deep complexity that it takes years of study to even approach being an expert.

The single most useful thing I’ve learned doing this is that you should never assume you know a lot about a topic. There are a. always more things to learn, and b. always people who know more than you.

[–] roofuskit@lemmy.world 41 points 2 days ago (2 children)

I have long said the only truly stupid people in the world are those who think that have nothing left to learn.

[–] Aceticon@lemmy.dbzer0.com 3 points 1 day ago

"All I know is that I know nothing", Socrates.

With time I came to understand this as meaning that there's always far more left to learn than one could possibly know.

Maybe not the original meaning (the whole Cave Allegory apparently comes from him via Plato, so maybe it's about how the World is not really what we perceive), but it kinda fits.

load more comments (1 replies)
[–] HamsterRage@lemmy.ca 25 points 1 day ago (1 children)

This is, of course, a perfect example of D-K in action. This dude is writing his own email server, FFS, and he characterizes himself as, "at least somewhat knowledgeable".

I've read a bunch of the old RFC's for email services years ago, when you needed some of that info in order to do interesting things with sendmail. I figure that might have put me in the top 20% of programmers/admins/techies back in the day. But to actually consider writing an email server - no way. That's a different level of "at least somewhat knowledgeable" .

[–] shalafi@lemmy.world 6 points 1 day ago (1 children)

The 500 mile email comes to mind.

https://www.ibiblio.org/harris/500milemail.html

Next. Level. Troubleshooting.

[–] hperrin@lemmy.ca 1 points 1 day ago

Oh man, that’s such a good debugging story. I really like the can’t print on Tuesday bug too:

https://beza1e1.tuxen.de/lore/print_on_tuesday.html

[–] vala@lemmy.dbzer0.com 14 points 1 day ago (1 children)

Running your own email server is a dark and lonely road that can only lead to crippling insanity. We can thank Google for that.

load more comments (1 replies)
[–] jimmux@programming.dev 16 points 2 days ago (1 children)

"I'll just validate email addresses with a bit of regex. How hard could that be?"

[–] hperrin@lemmy.ca 14 points 1 day ago* (last edited 1 day ago)

Right!? Fun fact, this is a perfectly valid email address:

"Pooper Scooper 💩"@[69.69.69.69]
load more comments (5 replies)
[–] acockworkorange@mander.xyz 84 points 2 days ago (3 children)

The world needs more humble geniuses. We're few and far between nowadays.

load more comments (3 replies)
[–] flop_leash_973@lemmy.world 47 points 1 day ago* (last edited 1 day ago) (3 children)

A mindset I just fell into as a much younger man for reasons I no longer remember was assuming everyone knew more than I did and did things the way they did them for a reason. And I should learn what that reason is before I go proposing changes.

That mindset has never steered me wrong. Even when I change something someone else put in place what I come up with is a better solution for taking the time to understand why the previous person did it the way that they did.

[–] bravesirrbn@lemmy.world 7 points 1 day ago (1 children)
[–] funkless_eck@sh.itjust.works 1 points 3 hours ago

i assumed there was some kind of story here - it being a parable - but its kinda more like a koan.

[–] Bakkoda@sh.itjust.works 19 points 1 day ago

I had a soccer coach from age 7-18. Same guy, brilliant dude, Dean of law at a very large state school. He told me at 12 to never talk to the other kids at the summer camps (competition) about what i was working on. "Just go out and do it and shut your mouth about it. That's how you impress on the field."

It's stuck with me since then.

[–] shalafi@lemmy.world 7 points 1 day ago

So much anger I see in the world is directed at policies, laws, procedures, whatever, that make perfect sense if one understands the background.

Sucks, but we can't all understand everything. I try, but I ain't that smart, and certainly can't be that experienced.

[–] SpaceCowboy@lemmy.ca 12 points 1 day ago (3 children)

Isn't it more that people who are given a test will tend to think that the test was easy when they score well (when they actually scored well because they're an expert) and people will think a test is hard when they aren't familiar with the subject (nobody could've answered these question!) .

So it's more that experts and non-experts both assume their knowledge level is more average than it actually is. Not as fun as "dummies think they're smart and smarties think they're dumb." We all just tend to think we're average and most people are at a similar level of expertise to ourselves.

load more comments (3 replies)
[–] original_reader@lemmy.zip 23 points 2 days ago

People who think they know everything are a great annoyance to those of us who do.

— Isaac Asimov

[–] Cybersteel@lemmy.world 7 points 1 day ago (2 children)

I don't think DK is really about intelligence but more on how averages work. I don't know, I don't have a degree in statistics just a basic biochem one.

[–] quick_snail@feddit.nl 2 points 1 day ago

We see what you did there

load more comments (1 replies)
load more comments
view more: next ›