Ya I was just thinking that the fact we haven't discovered aliens is strong evidence of new physics. Otherwise we'd see their electromagnetic emissions everywhe

Ya I was just thinking that the fact we haven't discovered aliens is strong evidence of new physics. Otherwise we'd see their electromagnetic emissions everywhere. I tend to think that we're just 1 or 2 discoveries away from a very different view of the universe. The low hanging fruit being stuff like: detecting neutrinos cheaply, having a better understanding of quantum computing/entanglement/etc, knowing how the extra dimensions at subatomic levels work (and how a dimension might be lost/gained or open up sub-universes within black holes), understanding how the electromagnetic/strong/weak/gravity forces converge at high energies and how to modulate one or more with the others, etc. If we're able to take all that stuff for granted, then the answer is probably that aliens communicate over some kind of encrypted quantum communication channel over something like neutrinos that is very hard to detect. They probably live around energy sources like magnetars and black holes and such so there's no way we'll ever see them against that glare. And their brains have almost certainly been uploaded to a metaverse that we have difficulty imagining, where our whole planet's computation would fit on a microscopic chip of theirs. I guess what I'm saying is, we might be more likely to find aliens through an altered state than out in space. They're probably here right now waiting for a knock on the door, once we know which door we're looking for. So yes, their superintelligent technology that's indistinguishable from magic to us might as well be religion at this point.