[–] [S] 1 point 2 months ago

Not really, exponential expansion baffles my brain.
For example, when I hear that "after Inflation, the Visible Universe was the size of an orange"... and I don't get it, I can't quite grasp it, I would have imagined that the Visible Universe after Inflation would have been a hundred million lightyears across.

How the light emitted from opposite ends of the diameter of an orange took 13.8 billion years to get to us in the center... or... something like that, with a cosmological redshift of z = (10)^16... I guess?

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  • [–] -1 points 2 months ago (1 child)

    I haven't had my coffee yet, so I'm not going to try formulating the equation because I'll get it wrong, but given that you have all the factors, you should be able to do some quick math and get a good estimate. Assuming expansion is constant, anyway. It's not, but you could at least get an upper and lower bound.

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  • [–] 3 points 2 months ago

    “Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space.”
    ― Douglas Adams, The Hitchhiker's Guide to the Galaxy

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  • [–] 3 points 2 months ago

    I think a lot of the so called medical research conducted in the concentration camps was intentionally discarded after the war. Its conclusions not reviewed because its methods of derivation were so heinous.

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  • [–] 4 points 2 months ago*

    No, the politicians who created the systems of government that led to genocides did not contribute anything positive to society. The scientists who created things that aided in those genocides also did not contribute anything positive because all of the things they created in the name of murder were used for murder.

    Did some scientists exist in that time period that contributed to society, yes, did the existence of these empires make it more likely that they created that technology? Who knows, I mean maybe Hitler chose to fund a truly good scientist that the previous system might not have, but maybe a Jewish scientist living in Poland that they killed might have invented the same technology if they hadn't invaded and killed them.

    There are very few advances in all of human history that were suddenly revolutionary. Just because one person often gets to publish the results first, doesn't mean they even had anything to do with the invention, much less helped it along. Just look as Edison or Ford as an example. They were no different than Musk and what little he himself contributed, we just have a lot more documentation and it's harder for Musk to hide behind his company than Ford or Edison. Almost all technology is incremental and it's much more likely that all the money spent on developing weapons during that time period would have been used to develop positive things that would have advanced civilization faster and for the better. Not to mention all of the money spent to fight and then recover from those wars. And even more so all of the brilliant people who were killed in the name of those wars whether as part of the genocide or by being drafted into the military or departments responsible for genocide.

    Any minor beneficial gains would have been gotten much more cheaply and quickly by spending on civilian than military research even if that military research might have eventually been used to become civilian technology.

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  • [–] 14 points 2 months ago (2 children)

    The first and particularly second world wars brought a lot of investment to R&D. For example, jet engines, rocketry, and nuclear weaponry.

    I don’t think that it’s correct to attribute that to the Nazis or Imperial Japanese.

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  • [–] 7 points 2 months ago*

    Nothing they did was new, just some centuries old shit with a new coat of paint. Aggressive colonialism and imperialism with "manifest destiny", subjugating "lesser races" and bringing "civilization to the barbarians", all in order to extract everything from said "barbarians" to fill their coffers at home.

    At home, they enforced national unity through repression - dissent was treason. Again, nothing new, you can see that happening in Paraguay circa 1860s, revolutionary France in the 1790s and other places before that.

    In the science front, Germany is where rocket science was "taken seriously" since the man that was the entire field of rocket science, Robert Goddard, was mostly ignored in the USA

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  • [–] [S] 2 points 2 months ago (2 children)

    Trees decay when they die, and just turn back into CO2

    Oil came from a time before bacteria evolved to break down trees.

    Trees won't solve the issue, unless we start turning deserts into permanent forests, which would probably just create issues elsewhere

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  • [–] 1 point 3 months ago (1 child)

    But how would they all know when to step out and into new room?

    They need some kind of a signal (bell, phone call, flashing light, speaker instructing them to move, ...)

    Fastest of these communication is light which has maximum speed of 300,000 km/s

    The light will reach first room instantly but since number of rooms is infinite, the light need infinite time to reach that last room

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  • [–] 5 points 3 months ago (2 children)

    No, because if you have a room empty, you now have to identify the vacated room, which could take an infinite amount of time

    Also, it would take up to an infinite amount of distance to walk to or from the front desk, so we just be dealing with immortal guests who have no time sensitivity at all

    Furthermore, the room must be made ready and guests tend to check out at a certain time of day, so you would have to decentralize everything while accounting for light speed limiting the speed of information

    Some of these problems are solvable if you add more constraints to the puzzle. Like, if you have a rate of check-in to checkout you could do something with statistics and discrete math to divide the infinity into an infinite number of sub hotels, and in doing so possibly guarantee availability for the guest in a long but linear amount of time

    It would be an interesting programming/math puzzle. My intuition tells me it is solvable, but it might not be

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  • [–] [S] 2 points 3 months ago

    The paradox is saying that for every number N there is an occupied room in the infinite hotel. But that there is still vacancy. The paradox

    wikipedia - Hilbert's paradox of the Grand Hotel Hilbert imagines a hypothetical hotel with rooms numbered 1, 2, 3, and so on with no upper limit. This is called a countably infinite number of rooms. Initially every room is occupied, and yet new visitors arrive, each expecting their own room. A normal, finite hotel could not accommodate new guests once every room is full. However, it can be shown that the existing guests and newcomers – even an infinite number of them – can each have their own room in the infinite hotel.

    As for the one i wrote what do you think?

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