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Joined 11 months ago
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Cake day: August 4th, 2023

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  • This kind of information is all suppressed now, but early on when Facebook only had likes, there was a lot of discussion on how downvotes weren’t really needed. It was believed that people engaged more with content they enjoyed, and ignored unfavorable content.

    This is wildly wrong. People obsessively engage with content they hate, to the extent that it probably makes more sense to only have a down vote button. Everyone knows that now, and the big sites uses psychological studies funded by casinos to gamify engagement, entirely in the pursuit of click-pennies.

    What do votes mean? On lemmy it seems nothing. On other sites they mean revenue for the owners.


  • Codex@lemmy.worldtoScience Memes@mander.xyzEvidence
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    2 days ago

    There are a ton of competing models for how the early universe formed. In order to explain why the universe is so smooth and flat though, they all invoke the idea of a short (10e-37 seconds) period of time immediately following “the singularity” that is presumed to have been literally the first point. During inflation the universe blows up 100000 times in size (and correspondingly drops in temperature by the same factor) then immediately slows down to roughly the rate of expansion we see today.

    There are a lot of simulations and theories about this could have worked. And I’m sure they all have lots of grounding and math and believers. But none of thr explanations I’ve ever heard amount to more than “when I do this funny thing, the math works and none of of us know why” and that has been the state of quantum physics for 70 years: a series of “we don’t know but the math works.”

    In software, we call that tech debt and I feel like our current model of profit-driven science isn’t capable of actually finding or reporting the answers that underly the debt-riddled results out of modern labs.



  • Codex@lemmy.worldtoScience Memes@mander.xyzEvidence
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    2 days ago

    The hot big bang is basically just “let there be light” wrapped up in science words and don’t get me started on the period of rapid inflation. It’s incredible to me that the bedrock of modern physics is hand-waved away to get grad students focused back on either bigger nuclear plants and bombs or more qubits.






  • Codex@lemmy.worldtoScience Memes@mander.xyzIrrational
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    6 days ago

    What? You use these words, but I do not think they mean what you think they mean.

    Quantization is probably the result of vibrational modes, that doesn’t mean irrational numbers don’t exist, just that we can’t measure an infinitely precise value. Tau and root-two exist, they arise naturally in the most basic geometric shapes.




  • Out past the planets is the heliopause, the final boundary between the solar system and interstellar space. Voyager discovered it, but other probes have confirmed it. The radiation and particles emitted by the sun create a pressurized bubble around it, where plasma (energized particles, mostly hydrogen) is much denser than past the heliopause. Cosmic rays are more prevalent outside it.

    I’ve heard it compared to the empty zone around where a sink faucet first hits, creating a little “wall” of water around it as the splashing water pushes back the standing water.

    “Empty” space is anything but. There’s tons of particles and energy flying though it, just not as dense.


  • Valtonen says that this has made the CPU the weakest link in computing in recent years.

    This is contrary to everything I know as a programmer currently. CPU is fast and excess cores still go underutilized because efficient paralell programming is a capital H Hard problem.

    The weakest link in computing is RAM, which is why CPUs have 3 layers of caches, to try and optimize the most use out of the bottleneck memory BUS. Whole software architectures are modeled around optimizing cache efficiency.

    I’m not sure I understand how just adding a more cores as a coprocesssor (not even a floating-point optimized unit which GPUs already are) will boost performance so much. Unless the thing can magically schedule single-threaded apps as parallel.

    Even then, it feels like market momentum is already behind TPUs and “ai-enhancement” boards as the next required daughter boards after GPUs.





  • You seem like a person who wants to try and do well and be a good manager. So be very careful of burnout, because the constant tension between doing what is right for your team and meeting upper-management expectations can drive you crazy. It did me anyway, which is why I don’t manage anymore.

    Take regular vacations and actually disconnect from work when you do. Try to do the same for at least 1 or 2 weekends per month. Being organized is important and helps with the job and the burnout, but there’s a thin line between “keeping notes in Obsidian keeps me focused” and “my entire 2nd job is now maintaining Jira tickets.”

    Organization is for you, keep it for you, and don’t let your organizing become a part of your “public api” or else it’ll become another avenue for status updates that you’re obliged to maintain. Turning your notes and private charts into data for upper management is why you compile special reports, just for them.