• Clot@lemmy.zip
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    7 days ago

    Establishment of first socialist state, one the most progressive states in history and truly ahead of its times, inspiring countless people and revolutions across the globe

  • HiddenLayer555@lemmy.ml
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    10 days ago

    The first photo of a black hole is the most historically significant “first photo of x” that happened in my life time and that I actually understood its historical significance when it came out. So I’d say that’s probably my favourite.

    • wewbull@feddit.uk
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      10 days ago

      Not a photo.

      It’s the output of an AI model trained on simulations of black holes being asked to fill in the gaps from sparse observations.

      • Riverside@reddthat.com
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        10 days ago

        Someone: takes a selfie with their phone under low lighting conditions

        You: "not a photo, it’s the output of an algorithm taking the luminosity from an array of light detectors, giving information of the colour and modifying it according to lighting conditions, and then using specific software to sharpen the original capture*

        • Butterphinger@lemmy.zip
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          10 days ago

          Nah, the hivemind is being cringe as shit rn.

          Recreating an image with Ai is not the same even remotely from capturing raw data directly from a digital sensor and cranking the exposure up.

          The Ai is approximating what it sees, digital sensors are not, they don’t approximate anything. It’s either there or they don’t see it.

          objective and subjective

        • Tamo240
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          10 days ago

          Its not hard to find that there are legitimate academic criticism of this ‘photo’. For example here. The comparison you made is not correct, more like I gave a blurry photo to an AI trained on paintings of Donald Trump and asked it to make an image of him. Even if the original image was not of Trump, the chances are the output will be because that’s all the model was trained on.

          This is the trouble with using this as ‘proof’ that the. Theory and the simulations are correct, because while that is still likely, there is a feedback loop causing confirmation bias here, especially when people refer to this image as a ‘photo’.

          • Legianus
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            9 days ago

            This is one team that disagrees out of many that agree.

            To explain what you are seeing. The above image is the inverse Fourier transform (FT) of different frequencies of sinus waves that compose an image.

            The very large baseline interferometer (VLBI) applied in the event horizon telescope (EHT) is using different telescopes all over the world, in a technique called interferometry, to achieve high enough resolutions to observe different frequencies in Fourier space that make up an image. If you observe all, you can recreate the full image perfectly. They did not, they observed for a long time and thus got a hefty amount of these “spatial” frequencies. Then they use techniques that limit the image to physical reality (e.g. no negative intensities/fluxes) and clean it from artefacts. Then transform it to image space (via the inverse FT)

            Thereby, they get an actual image that approximates reality. There is no AI used at all. The researchers from Japan argued for different approach to the data, getting a slightly different inclination in that image. This may well be as the data is still too few to 100 % determine the shape, but looks more to me like they chose very different assumptions (which many other researchers do not agree with).

            Edit: They did use ML for simulations to compare their sampling of the Fourier space to.

            • Tamo240
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              9 days ago

              Most of what you said is correct but there is a final step you are missing, the image is not entirely constructed from raw data. The interferometry data is sparse and the ‘gaps’ are filled with mathematical solutions from theoretical models, and using statistical models trained on simulation data.

              Paper: https://arxiv.org/pdf/2408.10322

              We recently developed PRIMO (Principal-component Interferometric Modeling; Medeiros et al. 2023a) for in- terferometric image reconstruction and used it to obtain a high-fidelity image of the M87 black hole from the 2017 EHT data (Medeiros et al. 2023b). In this approach, we decompose the image into a set of eigenimages, which the algorithm “learned” using a very large suite of black- hole images obtained from general relativistic magneto- hydrodynamic (GRMHD) simulations

              • Legianus
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                9 days ago

                Thanks for sharing that paper. I was indeed missing that information and now agree with your earlier statement.

                I think them using magnetohydrodynamical black hole models as a base for the ML is a better approach than standard CLEAN though that the Japanese team used. However, both “only” approach reality.

                • Tamo240
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                  9 days ago

                  You’re welcome. I think calling it the output of an ‘AI model’ triggers thoughts of the current generative image models, i.e. entirely fictional which is not accurate, but it is important to recognise the difference between an image and a photo.

                  I also by no means want to downplay the achievement that the image represents, it’s an amazing result and deserves the praise. Defending criticism and confirming conclusions will always be vital parts of the scientific method.

          • wewbull@feddit.uk
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            9 days ago

            I think, at best, it shows that the observations are consistent with the model, or to take it back to the blurry low light photo… The photo wasn’t obviously not Trump.

            I remember reading the original paper at the time and thinking, if I had been a reviewer I’d have wanted clear acknowledgement of the confirmation bias danger in the methodology. Ideally some sort of quantification of risk. It just seemed like too large a flaw to just be glossed over.

      • Legianus
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        9 days ago

        What do you mean AI? This is an interferometric Image reconstructed from information of the very large baseline interferometer (VLBI).

        Edit: Although I wouldn’t call it AI, they used machine learning (ML) with simulations in their image reconstruction, so I agree

        • wewbull@feddit.uk
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          9 days ago

          I don’t mean LLM. I mean a specific ML model for the job, but still trained off simulations.

          • Legianus
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            9 days ago

            Had some conversation with another commenter, I agree with you now. Cheers

  • IWW4@lemmy.zip
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    11 days ago

    It is hard to pick one, but this photo has always stuck with me. That is a picture from the Dust Bowl during the Great Depression.

  • bia@lemmy.world
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    10 days ago

    This one really affected me. It’s one of the first images from the surface of Mars. I was quite young, and it clicked in me that other planets actually exists and are out there in space.

  • lichtmetzger@discuss.tchncs.de
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    10 days ago

    Deepwater Horizon sinking in the Gulf of Mexico on April 22, 2010.

    It caused an equivalent oil spill of 4.9 million barrels and exposed the surrounding wildlife to toxic materials, covering thousands of animals in oil. The cleanup efforts took years.

    A prime example of humans messing up this planet for their own gains.

  • Dessalines@lemmy.ml
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    11 days ago

    Free Huey is a great one:

    Maybe that time a dove landed on Fidel’s shoulder during a speech right after the victory of the Cuban revolution.

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    10 days ago

    OP’s photo is my favorite, so I will have to mention my second favorite (though calling it a “favorite” feels off).

    This photo was taken in 2003 in Iraq. This man is comforting his son. They are being held in an American camp. IIRC to this day we don’t know what happened to these two.

    I think if I had to explain the last 25 years to a time-traveler, this would be the one photo I would choose.

  • EvenOdds@lemmy.zip
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    10 days ago

    The terror of war.

    Nobody wins in war, and I hate how angry this photo makes me feel.

    • Riverside@reddthat.com
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      10 days ago

      Nobody wins in war

      The Vietnamese won, as a matter of fact, and liberated themselves from colonialism as a consequence

      • LumiNocta@lemmy.zip
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        10 days ago

        True, and admirable. But the cost of winning, even if losing isn’t an option, is still loss.

        So many people lost.

    • Jessvj93@lemmy.world
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      9 days ago

      I love her, and the code she used is adorable:

      “LOL Memory” (Core Rope): The code was literally woven into hardware by women in factories, dubbed “Little Old Lady” memory.

  • KuromiGirl04@lemmy.world
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    10 days ago

    6-year old Ruby Bridges walking to school.

    This picture was always so powerful to me. I think I had that one famous illustrated storybook about Ruby Bridges.

    • anotherspinelessdem@lemmy.ml
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      9 days ago

      On the one hand, very important photo to understand the context of the time.

      On the other hand, monstrous that a child going to school was such a big deal and so much attention was focused on her. Can’t imagine that making a positive impression on a child.

      • KuromiGirl04@lemmy.world
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        9 days ago

        This is in the United States, during segregation.

        The little girl in the picture is Ruby Bridges. In 1960, she was one of the first Black kids to integrate a school. In this picture, she is walking to an all-Whites school and the guards are protecting her because the racist white adults wanted to harm her just for wanting to go to school.

        Ruby Bridges is still alive today.

      • cornishon@lemmygrad.ml
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        9 days ago

        Basically the US government decided to de-segregate schools in order to counter the “malign influence” of Soviet “lies” that the US is an apartheid state, but soon realized that the people were so racist that the black schoolchildren needed federal agents as personal bodyguards to prevent lynchings.

        • wewbull@feddit.uk
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          9 days ago

          US Gov: “We’re not an apartheid state!”

          [A few moments later…]

          US Gov: “…errrm”

      • FlyingCircus@lemmy.world
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        9 days ago

        Pretty much only the federal agents who were directly ordered to though, most of the rest of them were busy putting the boot on minorities here and everywhere else in the world.