If aliens existed we could readily see copious surface engineering in galaxies: "The germs of existence [on] earth if they could freely develop themselves would fill millions of worlds in the course of a few thousand years"(Malthus) https://waitbutwhy.com/2014/05/fermi-paradox.html … https://www.centauri-dreams.org/2012/01/23/rethinking-setis-targets/comment-page-1/ …
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I get the reasoning, but don't we have an extremely limited base for this? I also don't suggest aliens are "hiding," just that we suck at looking for them. A simple change of framing could alter everything we are already looking at. (i.e. earth orbits sun vs sun orbits earth)
We have strong understandings of quantum physics & surface engnrng + petabytes of spectroscopic data on billions of galaxies, so we don't suck at looking for them. Indeed would be blatantly obvious to us by now if there were even a handful of advanced civs per billion galaxies.
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Isn't it more relevant the time it takes distant light/radio waves/electromagnetic radiation to reach the earth from far off places. The earth did not begin emitting radio waves until a little over 100 years ago.
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I'm not talking primarily about shorter-length radiation (e.g. infrared, visible, ultraviolet) given off by their surfaces. The vast majority of these civilizations are very likely orders of magnitude older than the time it takes light to travel from them to our spectroscopes.
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Interesting. They might be gone then. How many light years are you suggesting? 100, 1 million, 1 billion?
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Our understanding of quantum physics is limited to our understanding of mathematics and time, which are highly perspective driven. It’s possible what we think we know doesnt begin to scratch the surface, or is based on incorrect assumptions of universal constants, and thus wrong.
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No. Spectroscopy demonstrates that the relevant laws of quantum physics are the same in these extremely distant galaxies as they are here.
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Even analysing light from Quasars has yielded the conclusion that while it appears constants havent changed, it cannot be ruled out that constants can change over time. It also can’t account for undiscovered scalar fields that may evolve slowly over time.
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TLDR constants aren't necessarily constant in a dynamic Universe.https://twitter.com/parallelind/status/1066409740643778560 …
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They're as capable as any other entity to use Bitcoin, though it might take a while to propagate blocks and sync the chain over there...2.5 million years at light speed...https://twitter.com/parallelind/status/1057764832110370817 …
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Hmmm, this might well be a ledger fork situation which most Earth-based Bitcoiners would accept :)
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LOL... we haven't even fully explored our own planet... And you think we have, not on the ability to fully search our OWN galaxy, but "billions" of other galaxies? Seems pretty arrogant to me. ;)
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Do you not find it possible we discover a fundamental aspect of physics that makes our current math "work" but in an "upside down" sort of way? And maybe I don't know, but how many planets do we really have highly detailed images of outside our solar system?
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