Physics nerd. Currently studying some quantum gravity adjacent stuff in QFT

They/them

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Joined 1 year ago
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Cake day: July 20th, 2023

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  • You don’t have to mean a joke for saying it to make you a complete and utter piece of shit. I absolutely don’t believe that playing a character is an excuse, especially when a lot of people see this sort of shit as justification for their own shitty behaviour in the real world.

    I also don’t think you have to intend malice, I frankly don’t care. If you’re laughing at someone for struggling to exist, it just doesn’t matter what you intended, I have no patience for fake excuses. Comedy doesn’t have to choose a class of people to stomp on to exist, and I think it’s an absolute lie when someone claims that it’s okay.

    If they’re just throwing slurs, then they really just aren’t good at comedy, it’s pathetic. It’s no different from schoolyard bullying, and it doesn’t have to be said directly to someone for it to be wrong.

    Yeah, I’m pissed off by comedians who do this shit, and I won’t apologise for it. They’re ruining their own craft, pretending that being mean is okay if it makes people laugh.

    Laughing at a condition rather than the person might be better, but there’s a fine line there. It can certainly be done right, it’s often handled a lot better by people joking about their own experiences rather than someone else’s.







  • Well, data just doesn’t really flow at the speed of light. It’s a really really complicated thing to discuss in terms of physical circuits because the true picture involves considering how the EM field evolves. Electrons in a circuit move at extremely slow speeds, ~millimeters per second.

    The good news is you don’t need to send information particularly fast to send it through time. Generally in physics, we build time travel systems by creating extremely curved spacetime that contains paths to the past, theoretically you could send light through such a path to transmit information back in time. As someone already mentioned, you generally need negative mass to construct these.

    If you have negative mass there are three options I’m aware of:

    1. Wormholes, stabilised and moved in the right way can form a link to the past (but only as far back as the moment they were created, this is true of all time machines as far as I know)
    2. Rotating torii of spacetime. Spinning spacetime is well known for creating weird time travel effects, a related option is an infinitely long rotating cylinder.
    3. A rotating warp drive. This thing will explode in a high energy shower of particles and thus it’ll be nearly impossible to use, but a friend of mine recently found a way to get particles to travel back in time through it.

    If you want to send information into the distant future, you could get really fancy and scatter some light off of a black hole or something.