AirTech wrote:(Tesla level fiddlings would be detectable a couple of light years away with the power transmission experiments and you would have to be blind and deaf to miss them).
Are you sure? I'd read that it was actually really hard to detect anything but an intentionally interstellar-beamed transmission at light-year distances because it gets lost in the noise, so aliens couldn't realistically, say, be looking at 50-year-old broadcast TV.
Would it really be possible to distinguish Tesla's experiments from, say, the sun's radio noise at the distance of Alpha Centauri?