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Ten Things We Still Don't Understand About Humans

ParticleGirl writes "New Scientist has an article examining 10 human features (bugs?) that we still don't understand, like blushing, laughing, and nose-picking. There are some interesting, speculative evolutionary explanations listed for each. '[Psychologist Robert R. Provine] thinks laughing began in our pre-human ancestors as a physiological response to tickling. Modern apes maintain the ancestral 'pant-pant' laugh when they are tickled during play, and this evolved into the human 'ha-ha.' Then, he argues, as our brains got bigger, laughter acquired a powerful social function — to bond people. Indeed, Robin Dunbar at the University of Oxford has found that laughing increases levels of endorphins, our body's natural opiates, which he believes helps to strengthen social relationships.'"

36 of 397 comments (clear)

  1. Nose picking? by 18_Rabbit · · Score: 5, Insightful

    What's not to understand? It clears the nose!

    1. Re:Nose picking? by Kokuyo · · Score: 4, Insightful

      And is so much less uncomfortable than blowing your nose.

    2. Re:Nose picking? by Anonymous Coward · · Score: 5, Funny

      And let's not forget how much fun it is. Not to mention how it drives the ladies wild.

    3. Re:Nose picking? by Abstrackt · · Score: 5, Insightful

      And it dislodges whatever blowing your nose couldn't.

      --
      They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance. - Terry Pratchett
    4. Re:Nose picking? by Anonymous Coward · · Score: 5, Funny

      No, we do it because it tastes great

    5. Re:Nose picking? by YrWrstNtmr · · Score: 5, Funny

      Obligatory:
      Why do gorillas have such big nostrils?

      Because they have big fingers.

    6. Re:Nose picking? by Anonymous Coward · · Score: 5, Informative

      And it dislodges whatever blowing your nose couldn't.

      This one morning... I had one of those hard, pointy bits of dried mucus in my nose, I had to pull it out, the poking was painful. It was firmly glued to the side of my nose, and I ended up pulling out a long strand that felt like it had been filling up a sinus cavity all the way across my cheekbone. It felt like my head was 5 pounds lighter after that! It was magical, I tell you.

    7. Re:Nose picking? by Ozan · · Score: 4, Informative

      I think the author equates nose picking with eating one's boogers, Mucophagy. I would really like to know why people do THAT.

      As for nose-picking itself, since humans are dry-nosed primates, drying of mucus in the nose is natural and cleaning it out is as well.

    8. Re:Nose picking? by icannotthinkofaname · · Score: 5, Insightful

      Oh, man, I know what you mean. Totally understand. I've felt that one. Nothin' like going from 1% clear nasal passages to 1% blocked.

      Very few things in life feel better.

      Mods: I'm 100% serious. Putting aside any personal feelings of disgust, how many of you agree? You all know it's true.

      --
      Let q be a radix > 1. I am in ur base-q, killing 10 d00ds.
    9. Re:Nose picking? by TeknoHog · · Score: 4, Informative

      And for some extra nasal bandwidth, try neti.

      BTW, blowing your nose is a really nasty practice, because is pushes the goo further into your sinuses. Of course, in some social situations it's the only acceptable way :-/

      --
      Escher was the first MC and Giger invented the HR department.
  2. Re:#1 by Anonymous Coward · · Score: 5, Funny

    The desire to be first

    And the crushing despair that follows when one fails.

  3. Missed one: by ninjapiratemonkey · · Score: 5, Funny

    Women.

    --
    01110000 01010111 01101110 00110011 01100100
    1. Re:Missed one: by Hurricane78 · · Score: 4, Insightful

      You don't. I do. In fact I changed from your point of view to being able to not only understand how women think but sometimes even play on their motivations like on a piano. Nice side effect: Works on men too! :) But of course, any unfair manipulation is completely out of question. Analog to "white hat hacking".

      But for you I have one single rule that you have to burn into your brain like your life would depend on it:
      It's not important what you say, but how you say it. Or more general, how it feels.

      This works while flirting, in every day communication, when arguing, when she asks if she looks fat, in creating a situation that will make her hot, etc, etc, etc.
      You can walk up to a girl, and literally say the biggest crap. If it creates the right feeling in her, it will work.
      That's why pickup lines are completely use- and pointless.

      Politicians and especially advertisers are professionals in this too. Because it works on the more "basic" emotional brain. (Which really is not "simpler" than logic, but just another kind of intelligence.)

      Never forgetting that single thing will help you more than any stupid relationship-help book. (Ok, I guess most of these include this nowadays.)

      --
      Any sufficiently advanced intelligence is indistinguishable from stupidity.
    2. Re:Missed one: by Hurricane78 · · Score: 4, Insightful

      Oh, I forgot: Of course I meant "how it feels for her"! Which means you have to listen to your emotional brain. Something that goes a bit against the stereotype of the cool western male, but in the end will make you a more manly man. (Protip: You still don't have to actually show all of those emotions. ^^)

      --
      Any sufficiently advanced intelligence is indistinguishable from stupidity.
    3. Re:Missed one: by Anonymous Coward · · Score: 4, Insightful

      I don't know, the level of unethical manipulation, objectivization, self-involvement, narcissism, and sexism in your theory seems perfectly consistent with the "stereotype of the cool western male."

      But you're right about not needing relationship-help books. They also just slap together half-assed, pseudo-psychology and painfully obvious observations on rhetoric.

      It's going to be painful, when you realize just how many women see right through your pose.

    4. Re:Missed one: by Sciros · · Score: 4, Funny

      You can walk up to a girl, and literally say the biggest crap. If it creates the right feeling in her, it will work.

      I disagree, I walked up to a girl, and indeed literally said "the biggest crap," and it didn't work.

      --
      I like basketball!!1!
  4. Or why people still take ... by Charles+Dodgeson · · Score: 4, Insightful

    ... the New Sensationalist seriously as a science magazine.

    (Fine, mod this flamebait. I've got Karma to burn and I really dislike that rag.)

    --
    Prime numbers are exactly what Alan Greenspan says they are -S. Minsky
    1. Re:Or why people still take ... by radtea · · Score: 4, Insightful

      ... the New Sensationalist [newscientist.com] seriously as a science magazine.

      Yeah, particularly as the article uses the outmoded term "altruism" for helping behaviour, and for some reason says, "most people say it doesn't make any evolutionary sense." I guess by "most people" they mean "most people who know nothing about the extensive and sound work on kin-selection and the evolutionary advantages of being a member of a group that engages in helping behaviour that has taken place in the past fifty years."

      Seriously, helping behaviour hasn't been an issue for a couple of decades, and only then amongst the innumerate hangers-on from an earlier era. No one who knows anything about modern evolutionary thinking believes it is an issue today, which pretty much means, "New Sensationalist chooses ignorant ass to make up plausible bullshit to sell magazines to ignorant people under the guise of science."

      --
      Blasphemy is a human right. Blasphemophobia kills.
    2. Re:Or why people still take ... by Cyberax · · Score: 4, Informative

      Parent is not a flaimbait. NewScientist is definitely "new stupidist" in this article.

      For example, it's clear that altruism is generally good for the community (even though it might be detrimental to an individual), thus it makes perfect sense that we've evolved it. Same for blushing.

      Etc.

  5. Re:Memes by Anonymous Coward · · Score: 5, Funny

    Sociology is a legitimate science.

  6. Re:Teenagers? by Ralph+Spoilsport · · Score: 5, Insightful

    Right and wrong. Teenagers are an invention. It used to be that you went from late childhood (13 - 14) into adulthood. There's a reason why many people had little more than an 8th grade education - after that you were expected to join the world of work. Alexander the Great had pounded much of the world into submission by the time he was 20. "Teenagers" as we understand them are a product of post WW2 western culture as a market for commodity capitalism in the face of expanding resource bases. As resource bases contract and the world goes back to a solar economy, expect the teenager to disappear.

    --
    Shoes for Industry. Shoes for the Dead.
  7. Re:Memes by Timothy+Brownawell · · Score: 4, Interesting

    Does anyone else just immediately stop listening when they see words like 'meme'?

    Perhaps 'meme' is a fnord.

  8. Re:Teenagers? by tacarat · · Score: 4, Insightful

    Can it be argued that the some of the problems with teens is that they're treated as kids longer than is healthy? Folks used to be "adults" much sooner. Maybe it's Darwin award fodder, but if an adult makes a stupid mistake, they're morons and treated accordingly. If a child does it, they're "just kids" who couldn't have known better. If a teen does it then they're sort of in the middle, dumb, but not responsible. The coddling that some parents throw into the mix does nothing but protect or encourage some behavior.

    So yes, kids should be allowed to start drinking, swearing, fighting, fucking, smoking, shooting, PAYING THEIR OWN WAY and whatever else sooner in life than when they're allowed to now.

    /rant off
    /goto parent's basement of neverending virginity

    --
    "Common sense will be the death of us all"
  9. Re:Why do noses run? by Knoeki · · Score: 5, Funny

    Why does your nose run, but your feet smell? That's what *I* have been wondering.

    --
    [ irc.p2p-network.net -> #zomgwtfbbq ][ http://zomgwtfbbq.info ]
  10. debated != "mystery" by SanityInAnarchy · · Score: 5, Insightful

    Example: Altruism.

    It actually seems pretty obvious -- a community which was altruistic would, in the long run, have a higher chance of survival than a community which wasn't.

    Another example: Superstition. I love this bit:

    Religion offers another possible evolutionary benefit of superstition.

    So... how is religion not superstition? Now you've got two mysteries, instead of one. And the same explanation still holds:

    Our ancestors would not have lasted long if they had assumed that a rustle in the grass was caused by wind when there was even a small chance it was a lion. And it is worth making false-positive mistakes to get these relationships right.

    Basically, religion and other superstitions are maladaptions of our ability to recognize patterns -- and an acceptable alternative to missing some pattern. Better to be paranoid than to be gullible -- better to be afraid of the tiger that isn't there than to be eaten by the tiger who is.

    I suppose these aren't proven, but I do find this pretty weak, even for a "top 10" list. It's not "mysteries" so much as "cases which are not yet airtight".

    --
    Don't thank God, thank a doctor!
    1. Re:debated != "mystery" by Hurricane78 · · Score: 4, Insightful

      That's for old "nature" religions.

      Nowadays religion is basically two things:

      First a god is one way to cope with the fact, that we never can know where it all comes from. (The big bang and there being no time before it, is another more realistic one.) Of course they are all by definition unable to answer that question. But better than to get crazy, right?

      Second, the "get crazy" part: If you ever read something about what we used to call neurosis or schizophrenia: It is basically the "art" of twisting the world so it's OK to you, even when it's not. You for example state, that it was OK that you got raped, because you really did bad things to your father when you were young. And then go to do way too much good, to make up for it, afterwards. Or you run onto the highway because you think you can control the world. And then when you get hit, you later insist that you wanted it that way.

      Religion basically is a light form of schizophrenia. Which is bad and good. (In psychology, if something is a disease, depends on your/their view of "bad".)
      It basically helps people cope with bad lives, horrible things, wars, poverty, and the everyday frustration. They can blame it on a higher power, or on their own fault to live by the rules of that power. So while I am far from being religious, I can totally understand people who are, and their needs for it. It's a useful tool for a desperate situation.

      Where it gets bad, is when people want to profit from those people, by acting as if they were a mediator between them and their higher power. While essentially taking over their will and life. It's the biggest and one of the most evil scams -- off the backs of them.
      But hey, people strive for the reproduction of their genes, and of their ideas. It's called evolution. And mother nature is really a bitch.

      --
      Any sufficiently advanced intelligence is indistinguishable from stupidity.
  11. Re:Laughter... by CharlyFoxtrot · · Score: 5, Interesting

    Kurt Vonnegut sort of agrees (about the reduced defenses) : "Jokes can be noble. Laughs are exactly as honorable as tears. Laughter and tears are both responses to frustration and exhaustion, to the futility of thinking and striving anymore. I myself prefer to laugh, since there is less cleaning up to do afterward â" and since I can start thinking and striving again that much sooner."

    Laughter is certainly not always pleasant, as anyone who's laughed to much will tell you. You know the laughter that borders on hysteria and sometimes ends in tears. It IS a cleansing experience though, your body's safety valve for letting out stored up emotion and frustration.

    --
    If all else fails, immortality can always be assured by spectacular error.
  12. Re:Teenagers? by Anonymous Coward · · Score: 5, Informative

    The Underground History of American Education is relevent here, if you're interested in one former teacher's account of how forced schooling came to be in the U.S. and where the new concept of "adolescence" came from. Highly depressing; I thoroughly recommend it. It's free to read online. (Not affiliated with it in any way, I just happened to have read it recently.)

    link

  13. Is slashdot going the way of Digg? by lalena · · Score: 5, Insightful

    We've all heard the joke about how to get on the front page of Digg.
    Your article title should be "Top X {Reasons|Ways|Games...] To [Pick Up Girls|Make your own Fusion Reactor...]"
    Yesterday on /. it was an article on 10 failed mouse designs. Today it is 10 things we don't know about the human body.

  14. Wow. by Hubbell · · Score: 4, Insightful

    "Indeed, Robin Dunbar at the University of Oxford has found that laughing increases levels of endorphins, our body's natural opiates, which he believes helps to strengthen social relationships."

    Pretty sure this has been common knowledge for years/decades.

  15. Some Seem Obvious by BinaryX01 · · Score: 4, Informative

    Some of these seem obvious, I am not a researcher or professor not am I involved with any sort of grant so I could be completely wrong but... Blushing - When we become excited or anxious blood rushes faster to the face that it is pumped away so the increased oxygenated blood causes the reddish tint, seems like this one is more of a why does our heart rate increase when we are excited or anxious? Pubic hair, we have hair around every part of the body that has more sensitive skin, head, genitals, inside of the nose, etc... Most of us don't have hair on the palms of our hands (you know who you are you unclean slashdotters) because that would interfere with tactile sensation needed for more dexterous tasks Teenagers, apes don't have someone constantly trying to sell them a look or mood. Teenagers don't invent fashions and trends marketers do. Then a popular teenager decides that what the marketer said about it being cool must be true and their peers all wanting to be cool too follow. I am pretty sure my grandmother was not "emo". Again it seems like the question here is why do humans feel the need to follow the crowd. Superstition - Somewhere along the way someone had a bad experience that they linked with another event (most likely coincidental) and they shared that information, and just as stories are retold superstition is passed along as well. There have also been some early studies showing that belief in superstitions may be a mild form of OCD. Nose Picking, if your nose is clogged up you pick it to open nasal passages. Like any other behavior this can become habitual to the point of it happening unconsciously at inappropriate times.

  16. Re:Teenagers? by Rozine · · Score: 5, Insightful

    Just because society expected teenagers to work in the past doesn't mean that there aren't significant mental (physical brain) changes going on during that timeframe.

    And resources contracting back to a "solar economy"? Turn in your geek card - geeks believe in the power of technology to improve lives. There's no reason to expect that that won't continue.

  17. Re:Memes by The_mad_linguist · · Score: 4, Funny

    Perhaps 'meme' is a fnord.

    'Meme' is a what?

    You didn't finish your sentence

  18. Re:Teenagers? by CharlyFoxtrot · · Score: 5, Insightful

    That's also why the world used to be a much more brutal place. Teenagers and their hormones and persecution and superiority complexes and need to prove themselves need to be contained until they mature a bit. Alexander the great sounds cool until you realize it was a guy with a god-complex (literally) running around with a private army slaughtering people everywhere he went to prove he was bigger and better than his daddy Philip.

    --
    If all else fails, immortality can always be assured by spectacular error.
  19. Re:Teenage behaviour is evolution's reaction by AnyoneEB · · Score: 5, Interesting

    The main evolutionary reaction to incest is the Westermarck effect, which basically means that people usually are not sexually attracted to anyone they spent a significant amount of time around during the first six years of their life. As that usually includes their parents and siblings, it greatly discourages incest.

    There are other posts on this thread suggesting that teenage rebellion only occurs in some cultures, so biological evolution does not explain it, although you could perhaps argue that cultural evolution does... but I am not really sure how that would work.

    --
    Centralization breaks the internet.
  20. A MUCH better list, courtesy of wikipedia by schweini · · Score: 4, Interesting

    I recently discovered a general list of unsolved problems, which I find fascinating. It's like a summary of the current limits of science and human knowledge and understanding.
    TFA was ridiculous.