Returning to this thread, but we can't prove or disprove the theroy of the universe being a simulation fully, but there are more valid points against it, than for it. If a higher being of species made a simulation, they would have limited ram, and would eventually run out of storage. The premise is for the theory is you have one real universe which makes a simulation, the people inside the simulation, make their own simulation, so on and so on, but we haven't made a simulation, so we are either the real universe, or the last simulation in the line.
And no, anything the same size and weight of pigs can not fly in the way birds do, and if a planet were hollow it would collapse in on itself.
