this post was submitted on 17 Mar 2025
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I wonder if you could analyze internet discussions for an effect.

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[–] [email protected] 102 points 2 days ago (13 children)

Causes :
long covid ?
micro plastics ?
screen time ?
sedentarism ?
fast food ?
lack of sleep ?
other ?

[–] [email protected] 2 points 11 hours ago

Technology, specifically short form social media content, has got to be the biggest driver here.

[–] [email protected] 91 points 2 days ago* (last edited 2 days ago) (2 children)

Heavy metal exposure

Sugar

The proliferation of food additives being used that are known to dramatically lower IQ

The gelding of our education system by morons who favor religious dogma over scientific fact

Criminally underfunded schools thanks to political leaders who see investing in future generations as budget waste

Failure to teach children critical thinking skills before exposing them to technology that makes it simpler for them

Being constantly bombarded and overstimulated every waking moment by media

Being chronically overworked and underrested

Climate change

Take your pick. The answer is "probably, yes."

[–] [email protected] 16 points 1 day ago

Heavy metal exposure

🤘😠🤘

[–] [email protected] 3 points 1 day ago (2 children)

Everything you said makes sense...except heavy metal exposure. Unless you mean lead or something...

[–] [email protected] 3 points 1 day ago

I know the phrase is ambiguous but from context they clearly meant actual metal.

[–] [email protected] 2 points 1 day ago* (last edited 1 day ago)

And mercury. And other heavy metals. They’re not just neurotoxic but biocumulative so even small exposures over a long time can add up to a lifetime of problems

[–] [email protected] 33 points 2 days ago (1 children)

idiocracy intro?

(IE the theory it pushed was in short, smart people do family planning, try to wait for everything to be perfect... and forget to get around to having kids).

Meanwhile on the less intelligent spectrum. Shit I'm pregnant again!!!... Oh and I got the girl in the trailer next door pregnant.

Or for a real world example... look at Lauren Boebert, the 35 year old grandmother in congress.

[–] [email protected] 9 points 2 days ago (4 children)

Yes absolutely (and i was afraid to say it out loud).
But now, we have also to explain why it did not so much apply in the past millennias ... or tens of past millenias. (again, i am afraid to say it ... don't want a shitstorm)

[–] [email protected] 1 points 4 hours ago

if you got married before 2000 and had a decent job. especially if both did. having kids seemed like a thing to do. past 2000 anyone smart had to contend that the world of their kids adulthood did not seem like it would be great.

[–] [email protected] 14 points 2 days ago (2 children)

The massive lowering of the bar of "good enough to stay alive". Life expectancy was consistantly in the 30s up until the 1870s. Simply having kids was life threatening... doing so while malnourished even more so.

Natural selection favors traits that increase the odds of having offspring, as well as those that avoid death before having offspring. Avoiding death is a lot easier than it used to be.

[–] [email protected] 9 points 2 days ago* (last edited 2 days ago) (1 children)

For what it's worth the average life expectancy was 30-something. That didn't mean that everyone, or even the mostly everyone, just dropped dead at 30.

It did, however, involve an awful lot of people dying in childhood. Often due to diseases that these days we've almost stamped out, but now antivax morons are working hard on bringing back!

[–] [email protected] 3 points 2 days ago

Yeah, I at least assumed that was understood with just "expectancy", obviously people live longer than expectations, and some die unexpectedly young. Key point is if you were given a mission where you must become a baby, and carry on life until you have 6 kids reach the age of 18. But you could chose what time to be born in (but not pick location, class or race), the lowest difficulty mode of that game would almost certainly be after 1950s... and prior to the 1800s would be viewed as very hard mode.

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[–] [email protected] 6 points 2 days ago (1 children)

Part of the answer is that mortality rates were far higher 150 years ago. A couple might have 5 children but only 2 survive to adulthood.

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[–] [email protected] 2 points 2 days ago (1 children)

If you have an idea that you regularly get called out on, you should probably say it and be willing to truly listen to what people are saying about it...lol

[–] [email protected] 2 points 2 days ago* (last edited 2 days ago)

i did it often enough. Now someone else did it for me and I'm very happy they did.

P.S. : Often it's not my ideas but the harsh direct way i express them 😆

[–] [email protected] 6 points 1 day ago (1 children)

Short form content like those found on reddit and here on Lemmy have retrained my brain, I'm sure of it. I'm actively trying to fight it, by forcing myself to read full articles, scroll more slowly and try to engage more fully rather than just endlessly scrolling for the next dopamine hit.

It's easy to justify this behavior because "I'm just getting my news and staying informed" and while partially true it comes at the cost of the medium it's provided by. Screen "reading" has definitely changed our brains for the worse and most people have no clue its even happened.

[–] [email protected] 1 points 11 hours ago

So far I'm liking lemmy more because there is a lot less per post. I find I'm enjoying each thread more fully. It's like I'm not endless scrolling because I can't. I've actually read more articles in the day since I've joined than in my last 3 months on reddit.

[–] [email protected] 2 points 1 day ago (1 children)

All of these and more. Did you know our carbon emissions are changing the ratio of oxygen in the atmosphere as a whole? Guess which species is known to get dumber when oxygen deprived. Don't worry about the warming ocean's increasing acidity, it just makes the ocean a more difficult habitat for the phytoplankton that make 65%of the oxygen in the atmosphere.

I'm sure our normalcy bias will protect us or maybe the invisible space monkey will save his favorite primates if we can commit a few more hate crimes in his name.

[–] [email protected] 2 points 1 day ago* (last edited 1 day ago)

That was already discussed in this post :
https://lemmy.world/post/26948801/15738537

copy pasted what i wrote :Present day atmosphere is about 400 or 450 PPM compare this to :

CO~2~ poisoning (Hypercapnia) https://en.m.wikipedia.org/wiki/Hypercapnia

→ Physiological effects :
A high arterial partial pressure of carbon dioxide ( Pa CO~2~ ) causes changes in brain activity that adversely affect both fine muscular control and reasoning. EEG changes denoting minor narcotic effects can be detected for expired gas end tidal partial pressure of carbon dioxide (...) increase from ((53,000 PPM)) to approximately (...) (66,000 PPM = 0.066 atm). The diver does not necessarily notice these effects.

[–] [email protected] 11 points 2 days ago

It's social media and political manipulation.

[–] [email protected] 18 points 2 days ago (1 children)
[–] [email protected] 15 points 2 days ago (2 children)

Lead was a much bigger problem in the 1970 when it was in road vehicles fuels. But now its only use in some small plane fuels. There is also much less use of lead paint and lead in water pipe systems.
N.B. : Study in that article is about decline from 2010 until today in 15-year-olds.

[–] [email protected] 15 points 2 days ago (2 children)

I remember still having to ask for unleaded gas, and that was in the '90s. Plenty of houses still have lead paint and lead pipes. Sure it was more of a problem in the 70s, but it didn't go away after that.

[–] [email protected] 2 points 1 day ago (1 children)

Every building before like 1978 has lead paint, but people forget that so does the land around them. I live in an area with older homes and we’re frequently warned not to grow vegetables within 10' of the house because the soil is too likely lead contaminated from peeling or stripping exterior paint over the years

[–] [email protected] 2 points 1 day ago

It's definitely worth having your soil tested before growing anything you plan to ingest in an urban environment.

[–] [email protected] 2 points 2 days ago (3 children)

Lead paint is encapsulated and not going to enter your body. Which houses have lead pipes? Even the houses I've lived in over 100 years old have all had complete copper plumbing.

[–] [email protected] 2 points 1 day ago

Most schools do. And Trump just axed the program trying to replace them all.

[–] [email protected] 4 points 1 day ago (1 children)

Lead paint is not going to enter my body, but that’s because I very rarely put unknown things in my mouth. Toddlers operate differently

[–] [email protected] 2 points 1 day ago

If you’re in a contaminated area, you’re contaminated. Hopefully not enough to make a difference if you don’t eat paint chips.

  • But smaller chips are part of the dust that gets everywhere.
  • Chips and stripped paint is part of the soil that may be pulled up into any vegetables grown in that soil.
  • heavy metals bioaccumulate so even small exposures over enough time can add up to a problem
  • it’s not just lead, mercury is notorious for bioaccumulating up the food chains for many seafoods
[–] [email protected] 3 points 2 days ago (1 children)

Meanwhile, it's presently in many other sources like chocolate and spices. It's part of the soup, it's not doing us any favors, but it's far from the sole causative factor.

[–] [email protected] 3 points 2 days ago (1 children)

So for quick context the reason why it's present in foods specifically plants is because the plants naturally leach it up.

[–] [email protected] 3 points 2 days ago

So the quality of soil is most important...

[–] [email protected] 11 points 2 days ago (1 children)
[–] [email protected] 9 points 2 days ago

Right after this message from our sponsors.

[–] [email protected] 9 points 2 days ago (1 children)

Why not the aggregate of all of these?

Why are you putting a space after your punctuation?

[–] [email protected] 4 points 2 days ago (5 children)

i agree that some aggregate of all of these, and to various degrees, and differently for different people, would apply. Also, i did not say more so to let the discussion open.

Now, about text formatting in here :
.
i wanted one line for each items
yet I didn't want it in 2 lines/items

see examples here :


line # 1(no spaces + one line feed) line # 2


line # 1(no spaces + 2 line feed)

line # 2


So, the only way to get the formatting i wanted is to have two spaces at the end of each lines followed by one line feed.

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[–] [email protected] 3 points 2 days ago* (last edited 2 days ago) (2 children)

In my personal observations less intelligent people tend to have more children.
Therefore population IQ drifts towards bottom.

I suspect that's because they do not fully understand all their future struggles and fates of their children in the world, fucked up by climate crisis and resource scarcity.

[–] [email protected] 12 points 2 days ago (4 children)

This is the plot to a fictional movie. Intelligence is a factor of many things, and most of those factors are not genetic.

Your observation seems close to the opinions of old school eugenicists. "The wrong people are having children".

[–] [email protected] 2 points 1 day ago* (last edited 1 day ago)

The problem with eugenics is proposed solutions, or criteria based of prejudice.

I claim it’s both fine and correct to state that the wrong people have too many children. You’re the wrong people if you have more children than you can adequately care for, to raise sufficiently for them to have a successful life. You’re the wrong people if you have children you’re not prepared for or otherwise can’t commit to raising or don’t have the ability to raise.

It’s wrong, eugenics, when

  • it’s prejudicial such as based on race, culture, religion
  • you’re judging another person’s worth, their rights on that worth, or their opportunities on their worth
  • you take it to an extreme, such as only the wealthy should have children.
  • you prescribe a solution that imposes your will on other people, or worse, legal or medical intervention


Better answers include

  • better education helps people make better choices
  • better medical care helps people know their choice will succeed
  • better safety nets help each child succeed even when their parents made a poor choice or had unexpected life events
  • better childcare options help give the parents a chance to succeed with trying to earn a living while raising a child
[–] [email protected] 5 points 2 days ago

The intro to Idiocracy doesn't actually mention genetics.

Smart people value intelligence and people who value intelligence will raise their children as such.

Parents who don't value intelligence don't raise their kids with intelligence in mind.

Public schools aren't actually about education. They're about job training and obedience, so they wont fill the gaps the parents are leaving.

[–] [email protected] 4 points 2 days ago (1 children)

it is not genetic, it is environmental. Children of parents with less intelligence will not be raised to be intelligent. They might be lucky/resilience and try to get the most support outside the house, but it is much harder to accomplish, and often is even met with harassment at home, due to the rest of the family being insecure about their own lack of intelligence. And that is only if they rebel, which is not necessarily true as they will not only lack easy access to basic knowledge about the world/science, but will also not be introduced to the importance of learning about it from their closest figures of authority. Escaping that cycle it is even harder if the family is facing economic hardship, which is true for most modern families in general. It really isn’t that hard to figure that out, the kneejerk reaction that the statement always gets is annoying.

[–] [email protected] 2 points 1 day ago* (last edited 1 day ago) (1 children)

the kneejerk reaction that the statement always gets is annoying.

I agree with everything you said, but I'm going to point out something. If there is a common kneejerk reaction to some particular topic, there's probably a reason for that. You yourself said its annoying? I suppose its predictable then. If you can predict that people are going to react in some way, you can write with more explanation to clarify that you aren't actually supporting something like eugenics. The poster I'm responding to did not do this.

I took this lack of explanation as support (which, on reflection, might be leaping to conclusions). The overall tone of the comment is rather judgemental.

The commenter is also wrong; IQ hasn't been "drifting towards the bottom", the average IQ increases every year. Its why they have to constantly adjust the tests, because 100 is meant to be an average score by design. This is primarily why I chose to respond to him. He's not saying " which is why we should invest in family planning" or "we should invest in children's education", he's making an untrue statement, and then pretending that this will cause some sort of feedback loop. Dumb people making more dumb people.

IQ is not some absolute quantitative metric of intelligence. The people who treat it like it is... I find that a lot of them are pushing some sort of angle or simply don't understand it.

[–] [email protected] 2 points 1 day ago

yes that makes sense, thank you for explaining.

[–] [email protected] 3 points 2 days ago (1 children)

Intelligence is a factor of many things, and most of those factors are not genetic.

You are very vague...

[–] [email protected] 1 points 1 day ago (1 children)

Im not going to write some big long podt, just two things:

  1. people, on average, are not getting dumber. Anything you noticed observationally about dumb people having more children does not seem to have any effect on the world. Human nutrition has improved vastly over the past 100 years, as has education, etc.

  2. IQ increases every year. I don't think this is evidence people are getting smarter because I think IQ is a poor measure of intelligence. I'm pointing this out to you because your statement about "IQ drifting toward the bottom'" is factually untrue.

[–] [email protected] 2 points 1 day ago (1 children)

IQ drifting toward the bottom'" is factually untrue

So, this post is wrong?

[–] [email protected] 1 points 1 day ago

Sorry, I thought this was in another thread that was actually talking about IQ. I've clicked through too many articles.

This article doesn't mention IQ at all, even though your response does. IQ isn't an absolute quantitative measure for intelligence even though many people conflate them - this is probably why the article doesn't mention it.

I'd dig into the Financial Times article that this Neoscope article is about but it's pay-walled. The neoscope article makes some case for intelligence declining (I don't have time to read those citations right now), but I'd point out this doesn't necessarily have anything to do with less intelligent parents having children. It could be evidence that the material conditions for us ordinary citizens is declining as a whole (I think we would both agree on that point). Cost of living is up, people are working longer. Long COVID probably has something to do with it, and stress.

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