stravanasu

  • 21 Posts
  • 136 Comments
Joined 1 year ago
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Cake day: July 5th, 2023

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  • It’s utter bullshit from the very start. First, it isn’t true that the Ricci curvature can be written as they do in eqn (1). Second, in eqn (2) the Einstein tensor (middle term) cannot be replaced by the Ricci tensor (right-hand term), unless the Ricci scalar (“R”) is zero, which only happens when there’s no energy. They nonchalantly do that replacement without even a hint of explanation.

    Elsevier and ScienceDirect should feel ashamed. They can go f**k themselves.






  • As most who have already commented here, I’m somewhat unimpressed (and would expect more analytical subtlety from a scientist). Wittgenstein already fully dissected the notion of “free will”, showing its semantic variety of meanings and how at some depth it becomes vague and unclear. And Nietzsche discussed why “punishment” is necessary and makes sense even in a completely deterministic world… Sad that such insights are forgotten by many scientists. Often unclear if some scientists want to deepen our understanding of things, or just want sensationalism. Maybe a bit of both…




  • Title:

    ChatGPT broke the Turing test

    Content:

    Other researchers agree that GPT-4 and other LLMs would probably now pass the popular conception of the Turing test. […]

    researchers […] reported that more than 1.5 million people had played their online game based on the Turing test. Players were assigned to chat for two minutes, either to another player or to an LLM-powered bot that the researchers had prompted to behave like a person. The players correctly identified bots just 60% of the time

    Complete contradiction. Trash Nature, it’s become only an extremely expensive gossip science magazine.

    PS: The Turing test involves comparing a bot with a human (not knowing which is which). So if more and more bots pass the test, this can be the result either of an increase in the bots’ Artificial Intelligence, or of an increase in humans’ Natural Stupidity.







  • Absolutely amazing!! I suppose you’ve seen some renderings like this one.

    However, these molecules don’t really have a will or a scope, and in fact I don’t like how they are deceivingly represented in some of these animations. These animations show, say, some aminoacid that goes almost straight towards some large molecule and does this and that. And one is left with the question: how does it get there and how does it “know” that it should get there? The answer is that it’s just immersed in water and moved about by the unsystematic motion of the water molecules. Some aminoacids go here, some go there. In these animations they only show the ones that end up connecting with the large molecule. OK, this is done just to simplify the visualization, but it can also be misleading.

    Similarly with molecules like kinesin, which seem to purposely walk around. Also in that case there’s a lot of unsystematic motion, that after a while ends in a particular more stable configuration thanks to electromagnetic forces. Simulations such as this or this give a more realistic picture of these processes.

    Don’t get me wrong, I’m not saying that the whole thing isn’t awe-inspiring or mind blowing. It is. Actually I think that the more realistic picture (without these “purposeful” motions) leads to even more awe, because of the structured complexity that comes out of these unsystematic motions.










  • My transition was quite smooth, but everyone has different circumstances. It wasn’t a problem with banking in my case, I just changed my email at the bank. But probably your bank works differently?

    In my case the good thing is that my email is hosted and handled by me, so I need something like Protonmail just as an emergency email in case my hosting server is down. (Sure I could use Google that way, but I just don’t want to.)