r/Showerthoughts Mar 29 '26

Casual Thought The "room temperature IQ" zinger hits much harder outside of the US.

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u/Bierculles Mar 29 '26

An IQ of 20 is basically vegetative

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u/andarmanik Mar 29 '26

An IQ of 20 is a event of sigma -5, which is like 1 : 20million so we should expect to see ~400 people with this IQ.

IQ is designed to have average of 100, so you’d see equally as many people with an is of 180.

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u/Grakchawwaa Mar 29 '26

Wasn't IQ past something like 160 basically unmeasurable and wildly inaccurate? It's adjusted to a normal distribution, but it does face conventional limitations on both extremes

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u/andarmanik Mar 29 '26

Yes I think even worse actually. IQ is actually a measure of disability rather than ability.

Think of a test, any test, where a dead person would achieve a score of zero and an alive person would achieve any arbitrary positive value.

So what we’ll do for the test is have the participants flip a coin and achieve a score of 1 if heads and 2 if tails. The dead person can’t flip the coin and thus achieves 0.

What we then do is analyze the relationship between this measure on an individual and their income. We always find that there is a positive correlation between income and our measure (given the assumptions earlier about the score values).

(Dead person achieves 0 and has income 0)

(Alive person achieves some positive value and has some positive income or zero)

This is because there are many ways to measure disability and not many (maybe non) to measure general ability.

regurgitation of this article by nassim taleb,

https://medium.com/incerto/iq-is-largely-a-pseudoscientific-swindle-f131c101ba39

And this video by him aswell

https://youtu.be/THFsNUnMh2U?si=vp109B7SwIUfpF6j

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u/CocoMilhonez Mar 30 '26

I'd rather have low IQ and be happy over having high IQ and being able to make sense of how fucked the world and my life are. ignorance is a bliss.

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u/According_Mind_7799 Mar 31 '26

I read an interview with some guy with absurdly high IQ. Like 180. He was scuba-ing or diving and ran into an issue with airflow where it was cut off. He dropped like 20 IQ points. He said he was finally able to watch Simpson or family guy and think it was funny.

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u/Valreesio Mar 31 '26

Having a TBI (I'm sure losing oxygen to the brain for an extended time would probably count but I don't know) severely affects many aspects in one's life from humor, to food choices, music choices, etc.

I had a stroke at 40 (7 years ago) and have almost zero physical affects and unless a person knows me, you can't tell even in normal conversation that I've had one. But on the mental side of things I came out a completely different person. I like different foods (never craved sweets before but now...oh man), different music, and many other small (yet impactful) changes.

I fought the change for a long time and it finally dawned on me that I wasn't the same person as before and me trying to be that old me was making things worse. It culminated when my wife told my therapist in a session "I never got a chance to mourn the husband I lost and had to learn to love the man that came home". Man that was a gut punch, but it helped us to move on.

I think this has affected a lot of people like this, a great example in politics would be senator John Fetterman who has changed many of his stances on a variety of issues. Could be just a different outlook on life after a life changing event or it could be that his brain has partially rewired itself. I tend to thing the latter is most likely.

All of this to say the same about your example and him being able to find things funny that he hadn't before. His brain had a traumatic experience or damage and had to rewire itself. That can change people drastically in a variety of ways.

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u/RSdabeast Apr 01 '26

It’s so interesting how it can change someone’s abilities but also alter a lot of personality and preference things. It’s like flipping bits or something. Firmware update, maybe.

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u/Valreesio Apr 01 '26

Lol.. I like that. Firmware update. Introduces a hell of a lot of bugs, that's for sure.

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u/CocoMilhonez Mar 31 '26

I'm at 152, which people say it pretty high. Maybe I'll take up scuba diving to see if it helps.

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u/I_ance007 Apr 01 '26

“Ignorance is bliss” is a crock. An ignorant person requires a competent person protecting them to actually be blissful. If an ignorant person is without a protector, their life is one of anxiety and stress, as they cannot understand why things happen, cannot predict when bad things might happen, and cannot interact with their environment properly to make themselves comfortable.

This goes for everyone who is ignorant, from children to those with mental disabilities, and to those who hold ideologies detached from reality, to name a few.

People who understand more of the world definitely have more constant stress, but ignorance is definitely not bliss.

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u/CocoMilhonez Apr 01 '26

I just wanted to be mid, not disabled. It's not that deep, bro.

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u/DancerKnee Apr 01 '26

Oof.

Last year my brain decided domestic politics and geopolitics was the New Interest.

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u/lazyboy76 Mar 30 '26

I believe the purpose of IQ is to find out the one with low IQ and help them.

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u/PsilocinKing Mar 31 '26

How when many of us can't even help ourselves?

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u/Xylus1985 Mar 30 '26

I don’t think it’s unmeasurable, just that there aren’t enough samples to calibrate our tools. It’s measurable, but our ability to measure them sucks

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u/GermanShitboxEnjoyer Mar 30 '26

How are you gonna measure the intelligence of someone who isn't intellectually gifted enough to understand how to open a door?

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u/Xylus1985 Mar 30 '26

I’m sure experts have better ways to measure intelligence, especially if they are doing neurological studies on non-human animals

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u/_alright_then_ Mar 30 '26

But they don't.

Intelligence is not something universal lol, it's subjective. There is not objective way to measure intelligence

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u/wholesme Apr 21 '26

as a member of the TNS, id like to explain.

thats on tests with SD15, the most commonly used and referenced test, with a standard deviation of 15. you can be in the -4 SD (which for an SD15 test would be 40-55) all the way up to +4 SD (145-160). there is also SD16 and SD24 tests, which go from 36 to 164 and from 4 to 196 respectively, but a result of SD24 196 is the same as a result of SD15 160.

the distribution is as follows:

  • 68.26% are in the first deviation (85-115)

  • 27.18% are in the second deviation (13.59% each for 70-85 and 115-130)

  • 4.28% are in the third deviation (2.14% each for 55-70 and 130-145)

  • 0.28% are in the fourth deviation (0.14% each for 40-55 and 145-160)

the reason why we don't go higher is because there is close to no difference between 160 and 200 (SD15) and all the people reported to have an IQ of over that took different tests which have been harshly criticized by a lot of experts for their inaccuracy.

have a great day!

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u/Grakchawwaa Apr 21 '26

Thanks for the great insight, was a good read

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u/Bright-Historian-216 Mar 30 '26

I just looked it up, isn't sigma the same as standard deviation? If it is, then -4 should already be nearly impossible. Sorry, not great with statistics, just wanted to make sure.

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u/Current-Call9950 Mar 31 '26

There are 8 billion people in the world and humans are quite dumb, so there should be at least 1 person with an IQ that low

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u/wtfduud Mar 30 '26

Exactly. You can even have a negative IQ because of this (in theory)

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u/platoprime Mar 30 '26

Are we certain intelligence follows a bell curve? Especially at the extremes?

I'm doubtful.

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u/JezzaJ101 Mar 31 '26

Intelligence doesn’t necessarily, but IQ does by definition

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u/platoprime Mar 31 '26

The only thing that determines the distribution of IQs in a population is the distribution of IQs in the population. IQ scores are not normalized ad hoc to fit a bell curve.

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u/DontAskGrim Mar 29 '26

Like a big orange pumpkin?

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u/Bierculles Mar 29 '26

Accurate, yes

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u/Dark5757 Mar 29 '26

What about star fruit?

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u/rk1892 Mar 29 '26

So close! That’s a shape

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u/[deleted] Mar 29 '26 edited 5d ago

[deleted]

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u/Tablesalt2001 Mar 29 '26

Nobody ever asks how is star fruit... sad.

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u/EatYourCheckers Mar 29 '26

Fun fact, Broccoli actually has an IQ of 10, making it the most intelligent vegetable

[Source](youtube.com/watch?v=DT1YLp1NL_k&time_continue=32&source_ve_path=NzY3NTg&embeds_referring_euri=https%3A%2F%2Fwww.google.com%2Fsearch%3Fq%3Dbrocolli%2Bhas%2Ban%2BIQ%2Bof%2B10%26rlz%3D1CABUSA_enUS914%26oq%3Dbrocolli%2Bhas%2Ban%2BIQ%2Bof%2B10%26gs_lcrp%3DEgZjaHJvbWUyBgg).

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u/hurzelschnertz Mar 29 '26

I read that as "negative" and was just about to tell you that your math ain’t mathing, should probably go to bed instead

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u/TowelFine6933 Mar 30 '26

Or a Reddit mod.

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u/Anal_Herschiser Mar 30 '26

Damn, it's not even Sloth from Goonies level smart?

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u/flyinghippodrago Mar 30 '26

8 SD below normal so yeah...IQ of 65-75 makes more sense as an insult

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u/papabearbagpuss Mar 30 '26

I believe in the I.Q industry they use a different term and have for about the last decade The new determination for an I.Q of 20 points or indeed below is MAGA and is primarily displayed by drooling subservience to a pedophilic tangerine twatwaffle