• 1 Post
  • 32 Comments
Joined 11 months ago
cake
Cake day: August 8th, 2023

help-circle
  • JoBo@feddit.uktoScience Memes@mander.xyzCommunity
    link
    fedilink
    English
    arrow-up
    8
    ·
    1 month ago

    The fact of higher protein content appears to be true (without going back to find and critique all the original studies). Explanations are much harder to ‘prove’ for questions like this.

    We can’t do experiments on the evolution of tears, so all we can do is come up with plausible theories and look at how they fit with the body of evidence. With enough evidence, from enough different angles, we might one day be able to say which proposed explanations fit the facts (and which don’t). It’s how we (eventually) proved smoking was killing people (another question we cannot do experiments on human beings to prove one way or the other) but not all questions are as important as smoking was and there isn’t necessarily a neat, single factor explanation to find even if someone was willing to fund all the necessary research.

    Not my area but, for example, I recently saw a study claim that sniffing women’s tears makes men less aggressive. That’s an angle that might help build some support for, or knock down, the theory that emotional tears are useful for social communication (ie help get women killed slightly less often). Did those studies use sad stories or onions? Did any study compare sad stories to onions? If we’re seeing hints of differences between sad stories and onions, that would tend to support the social communication element of the explanation. Unless we think there’s a difference between sad tears and frightened tears, which there probably is, so we should check that too. And the rest of the literature on tears, if it’s considered important enough to get the theory right. And we need to remember that sticky tears are not the same thing as smelly tears, so can we do experiments where non-emotional tears are made sticky, and non-sticky tears made to smell frightened?

    Etc etc.

    Explaining things we observe but cannot directly experiment on is a process, a process which typically takes many years and dozens of research groups. And a lot of funding. And decades of exhausting battles, if there is a lot riding on the answer (as it did with Big Tobacco vs Public Health).


  • Obviously, people want that (the actual question asked was about an “urgent” need to see a doctor).

    But this proposal is just a repeat of one of Blair’s worst policy failures, without acknowledging how or why it failed.

    When New Labour introduced the 48 hour target to see a GP, the vast majority of GPs ‘met’ the target by closing down their phonelines as soon as they ran out of appointments. In the process, they turned the 48 hour target into a 24 hour target because otherwise they’d only have been able to open the phoneline every other day.

    It was very bad back then. It’s much worse now because the NHS was at least relatively well-funded under Blair.

    Not that they’re announcing this because they think the policy will work, obv. Just doing their best to make sure the voters blame everyone but them.

    [The link is to a video of an election Question Time audience haranguing Blair about the foolishness of this target.]





  • I mean, yeah. All of this. Absurd.

    But, FWIW, offloading cheap tat onto charity shops is not going to work well. It costs them money to put it on a shelf and it probably takes up more space than it is worth. Plus, they very likely can’t sell electrical equipment that has had its cord chopped up and repaired, or at least not without spending more on having it tested than they could sell it for anyway.

    Next time, find a friend with small feet who would like to take it off your hands.


  • Because there is no mirror image.

    @pjwestin@lemmy.world has given you a good description of fascist methods. They’re not available to the opponents of fascism because they are not fascists.

    Fascism appeals to the worst parts of our nature. It gives permission to those feeling fear, humiliation or shame to lash out in anger and destroy the people that make them feel that way.

    You can’t deploy the same tactics to make those people want to be on your side instead. If you try to shame them, they will just hate harder.

    You should, of course, expose and ridicule the grifters who lead fascist movements and punching fascists is encouraged. But you need to distinguish between authoritarian leaders and the people they seek to lead.

    You should not pander to the billionaire-funded leaderships (take note NYT), but you must not sneer at the people they are trying to lead (take note centrist Dems).




  • JoBo@feddit.ukOPtoTechnology@lemmy.worldOn Being an Outlier
    link
    fedilink
    English
    arrow-up
    1
    ·
    3 months ago

    The way he plays with the meaning of words

    She (or, if you’re not sure, they).

    any kind of bureaucratic or rule-based decision-making

    Human-written rules are often flawed, and for similar reasons (the sole human thought process that ‘AI’ is very good at reproducing is system justification). But human-written rules can be written down and they can be interrogated. But Apple landed itself in court because it had no clue how its credit algorithm worked and could not conceive how it could possibly be sexist if the machine didn’t get any gender data to analyse.

    Perhaps that is the point.

    That is, indeed, the point.



  • JoBo@feddit.ukOPtoTechnology@lemmy.worldOn Being an Outlier
    link
    fedilink
    English
    arrow-up
    2
    ·
    3 months ago

    The data cannot be understood. These models are too large for that.

    Apple says it doesn’t understand why its credit card gives lower credit limits to women that men even if they have the same (or better) credit scores, because they don’t use sex as a datapoint. But it’s freaking obvious why, if you have a basic grasp of the social sciences and humanities. Women were not given the legal right to their own bank accounts until the 1970s. After that, banks could be forced to grant them bank accounts but not to extend the same amount of credit. Women earn and spend in ways that are different, on average, to men. So the algorithm does not need to be told that the applicant is a woman, it just identifies them as the sort of person who earns and spends like the class of people with historically lower credit limits.

    Apple’s ‘sexist’ credit card investigated by US regulator

    Garbage in, garbage out. Society has been garbage for marginalised groups since forever and there’s no way to take that out of the data. Especially not big data. You can try but you just end up playing whackamole with new sources of bias, many of which cannot be measured well, if at all.




  • JoBo@feddit.ukOPtoTechnology@lemmy.worldOn Being an Outlier
    link
    fedilink
    English
    arrow-up
    1
    ·
    3 months ago

    Where did you get insurance carriers from?

    No idea what your post, before or after edit, is trying to say. But the subject of your quoted sentence is “proponents of AI” not “AI”, and the sentence is about what is enabled by AI systems. Your attempt at pedantry makes no sense.

    If you’re suggesting that it is possible to build an AI with none of the biases embedded in the world it learns from, you might want to read that article again because the (obvious) rebuttal is right there.


  • JoBo@feddit.ukOPtoTechnology@lemmy.worldOn Being an Outlier
    link
    fedilink
    English
    arrow-up
    2
    ·
    3 months ago

    Isn’t that a continuation of “why the outlier was culled”?

    Not sure I follow, but I think the answer is “no”.

    If you control for all the causes of a difference, the difference will disappear. Which is fine if you’re looking for causal factors which are not already known to be causal factors, but no good at all if you’re trying to establish whether or not a difference exists.

    It’s really quite difficult to ask a coherent question with real-world data from the messy, complicated reality of human beings.

    A simple example:

    Women are more likely to die from complications after a coronary artery bypass.

    But if you include body surface area (a measure of body size) in your model, the difference between men and women disappears.

    And if you go the whole hog and measure vein size, the importance of body size disappears too.

    And, while we can never do an RCT to prove it, it makes perfect sense that smaller veins would increase the risk for a surgery which involves operating on blood vessels.

    None of that means women do not, in fact, have a higher risk of dying after coronary artery bypass surgery. Collect all the data which has ever existed and women will still be more likely to die from the surgery. We have explained the phenomenon and found what is very likely to be the direct cause of higher mortality. Being a woman just makes you more likely to have that risk factor.

    It is rare that the answer is as neat and simple as this. It is very easy to ask a different question from the one you thought you were asking (or pretend to be answering one question when you answered another).

    You can’t just throw masses of data into a pot and expect sensible answers to come out. This is the key difference between statisticians and data scientists. And, not to throw shade on data scientists, they often end up explaining to the world that oestrogen makes people more likely to die from complications of coronary artery bypass surgery.


  • JoBo@feddit.ukOPtoTechnology@lemmy.worldOn Being an Outlier
    link
    fedilink
    English
    arrow-up
    2
    ·
    3 months ago

    That kind of analysis is done all the time. But, even if we can collect all the relevant data (big if), the methods required are difficult to interpret and easy to abuse (we can’t do an RCT of being born female vs male, or black vs white, &c). A good example is the proliferation of analyses claiming that the gender pay gap does not exist (after you’ve ‘controlled’ for all the things that cause the gender pay gap).

    It’s not easy to do ‘right’ even when done in good faith.

    The article isn’t claiming that it is easy, of course. It’s asking why power is so keen on one type of question and not its inverse. And that is a very good question, albeit one with a very easy answer. Power is not in the business of abolishing itself.




  • So, none of you have stipends and it is a group project for class. See my original answer. They’re not going to have the same priorities as you and, if you’re going to work with a group, you need to accept that.

    Throwing mountains of documentation at them isn’t going to work. Talk to them and find out what it is they are finding difficult. Break it down into more manageable chunks. Rough-code it and work out the details when they have a big picture to work from. Or whatever it is that makes sense given what you’re doing.