>>14236360visual as in visible from space, yeah probably not that likely, but you wouldnt have to dig deep to find evidence of a cities grid, sewer pipes buildings, subways, foundations, all of that neatly arranged into the same geometry on a km spanning grid, even if the materials were compeltely gone which they wouldnt, the replacement would "fossilise them". You wouldnt need to find a mud preserved subway with bodies artifacts, plastic metals and a collection of different materials arranged into unmistakable artificial shapes. I mean there wou ld be a truly fuckton of much simpler evidence. But things like titanium mechanism, or fucking titanium submarine hulls would be insanely evident until the sun explodes.
We already know the material "bone" is resistant enough to present evidence of its existence after almost a billion years. How about plastic, steel, titanium, all alloys of plastics you can think about, carbon nanotubes, experimental weird material, all sorts of glass, all sorts of concentration of chemicals that do not ocurr in the wild. In all sorts of conservational circumstances, underground, in mines, on mountain, in space, in the deep sea, in the shallow sea, in all sorts of containers, in all sorts of climates, all of those, numbering in the billions with a b. It's just not possible that all that evidence is naturally erased, it can only be done intentionally, and at an insane cost that would be way beyond our current capacity to do it.
