DefinitelyNotAPhone [he/him]

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Joined 4 years ago
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Cake day: July 29th, 2020

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  • Consciousness is not part of the observer effect (which is itself named in the most infuriating way possible, specifically because it makes people think that the universe is somehow aware of when something sentient is looking at it). “Observing” a particle requires interacting with it in such a way that you meaningfully affect its current state of being, whether that be deflecting it in a different direction than it was going or changing its velocity, and therefore it is impossible at a quantum level to be a passive observer that does not influence the outcome.

    In the case of the double slit experiment, if unobserved light will act as a wave with interference and if observed then it acts like a particle. The reason for this is both complicated and simple: light behaves as a wave due to probability. There’s no way of observing a photon without influencing it, so therefore the best we can do is say it has a certain probability of being in this collection of spaces, which in the case of photons is a wave (because it can travel in any of a number of directions outwards from the photon emitter in the experiment, but all going away from the emitter and towards the wall the slits are cut into). For the purposes of this probability wave, the start position is the emitter and the end position is the wall behind the slits, so averaging out a large number of photons will recreate the interference pattern on the wall.

    However, if you observe the photons at the slits to try and figure out which slits they’re going through you have influenced the photons and thus collapsed that probability wave into a particle, and in the process created a new probability wave from that moment onwards which has the same end position as the original wave, but now starts at the individual slit. From its perspective, there is no second slit, so now the wave acts as if it is in the single slit setup because from its perspective it is, hence the loss of interference.

    Nothing here has anything to do with consciousness. You can recreate this experiment with no one in the room and it will behave exactly the same, and has a sound (if very confusing conventionally) mathematical cause.

    On a side note, string theory is effectively unfalsifiable and therefore completely useless as a scientific theory.





  • Time doesn’t slow down when you approach the speed of light

    Correct, but only from your perspective. To other people you’ve slowed down, but from where you’re sitting (or careening through the cosmos at the universal speed limit) everything happens just as fast as it normally does.

    the theory we’re using to describe much of the universe is based on a bad premise, that the speed of light is constant.

    Quasi-correct. “The speed of light” as we think of it in physics is actually the speed of information, which dictates how quickly changes can propagate outwards (or put another way: how quickly you can know about something happening elsewhere). We refer to it as the speed of light because photons move at that speed in a vacuum due to having no mass and thus moving at the fastest possible speed, but things like gravitational waves also propagate at that same speed and have nothing to do with EM radiation. However, the speed of information doesn’t change; it’s a hard natural law with no known exceptions.

    Physics in general is cheating for this thread though, because the answer to what makes stuff happen as we understand it is a giant metaphorical mass of “I 'unno.” The Standard Model, relativity, quantum mechanics, string theory, etc all have giant gaping holes in them that other models can often fill, but cannot be properly combined in any way that we’ve tried so far. They’re still correct enough to base your entire life around without any worries, but there’s always that last 0.01% that amounts to the margins of old maps reading “Here There Be Dragons”.









  • Feudalism never ended, it just transitioned from a bunch of failsons inheriting land titles to a bunch of failsons getting middle management jobs through nepotism. Every company larger than 50 people is a vast internal labyrinth of lords-in-everything-but-name jockeying for promotions, accolades, and raises by inflating their roles, and the best thing you can do for yourself is find a position that isolates you as hard as possible from having to deal with that yourself lest you end up spending 50 hours a week working to get one over some petty rival of your boss.