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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But what if "engineering" doesn't look like we would expect it to? What if its far more micro than the conception of it we have today? And if a species is extra-planetary, who is to say they must be confined to planet surface and/or conform to specific organism "vehicle?"
Quantum physics is universal, so we can expect physics-based fundamentals of surface engineering to be universal. However alien, engineered surfaces look radically different from natural. If aliens are at all common at least some aren't trying to hide like elves and hobbits.
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i.e. if you have to posit that all advanced alien civs (and almost all will 100s of millions to billions of years more advanced than us) are hiding like elves and dwarves, that's basically an admission that they are mythological.
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but what if advanced aliens didn’t simulate themselves in this simulation?
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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)
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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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Maybe they're hiding like something else.
@Snowden suggested advanced civilizations might encrypt their communications. See https://www.inquisitr.com/2443714/edward-snowden-fermi-paradox-ufo-sightings-alien-life-in-space-encryption/ …Thanks. Twitter will use this to make your timeline better. UndoUndo
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Why are we so certain we'd have the ability to detect them? Even a Dyson sphere could conceivably be an imperceptible blip on a spectrograph
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