Parallel worlds, simulated ones, and the silence where the neighbors should be.
What belongs here
The multiverse and the simulation hypothesis. Fermi, the Drake equation, the great filter, the dark forest. SETI, the Wow! signal, fast radio bursts, Tabby’s star, 'Oumuamua, 3I/ATLAS. Exoplanets and astrobiology. The Moon and Mars anomalies, the Black Knight, Planet Nine. Pole shifts, solar storms, asteroid impacts. NASA, SpaceX, Voyager. Sagan.
What doesn’t, and where it goes
Whether a machine is awake goes to Machines; whether we’re in one stays here. Physics for its own sake goes to Science. A UFO is Contact even when it’s in orbit.
House position
The simulation hypothesis is a cosmology and is categorized here. AI consciousness is a Machines question. They’re neighbors, but not the same.
How to post here
Add at least one Subject tag.