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  • exocrinous@startrek.websitetoScience Memes@mander.xyzPolisci
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    6 months ago

    No, it’s observation. An experiment involves manipulating an independent variable while controlling other variables. There’s none of that in space, not counting the ISS and Apollo. That said, you can still test hypotheses using observation. And that’s equally true in both astronomy and in social sciences.











  • Some comic-book events feature a black Superman, and that raises questions about whether Kryptonians coincidentally match every ethnic group on Earth

    Not exactly, but they have dark and light skin. Krypton’s red sun is a big deal in Kryptonian health. Kryptonian communities living closer to the equator would probably evolve higher melanin the same as humans did. Actually, light-skinned Kryptonians require a bigger suspension of disbelief than dark-skinned ones do.

    And obviously the racial dynamics between dark and light Kryptonians wouldn’t be the same as on earth. It would depend upon factors like the shape of continents, the location of arable soil, of large herbivores and of predators, and of minerals.

    Fun fact: swords made out of meteorites are a common trope in Japan, because Japan has poor iron and big mountains.



  • These pods are only used on rails with very low ridership. They would switch to a train if ridership increased.

    Look at it this way: you can have a train that has a capacity of 100 people, but it only runs once a day due to the low demand, and only 2 people want to ride it at that time of day…Or you can have 10 pods, which do not require as much railway maintenance, and they can carry the 10 people who actually want to use this railway, completely on demand.

    Yeah, a train is better if you want to move ten thousand people a day at peak hour. But this is a cheaper way to move ten people at different times across a day. And it’s a cheaper way of inducing the demand that would justify the more efficient kind of expansion.