An intelligent being in a 'state' of decreasing entropy seems a little difficult to imagine. Much more realistic, IMO, would be a civilization that was made en

An intelligent being in a 'state' of decreasing entropy seems a little difficult to imagine. Much more realistic, IMO, would be a civilization that was made entirely of dark matter. Perhaps they might be able to infer our existence if we built some insanely powerful particle accelerator (and vice versa). If not then we would presumable only be able to communicate through gravitational effects...