Comment: The Trick Is ... (Score 1) 344
Real extraterrestrials will look nothing like human. They might be super-intelligent shades of the color blue. If we're lucky.
Differentiating them extraterrestrials and the landscape may be problematic.
In any case, all the exoplanet talk is entirely speculative. During my lifetime, scientists expected to find life on both Mars and Venus -- and those planets are infinitely closer to Earth than any exoplanet. It was only after sending probes to Venus, for example, that we discovered it was a hell-hole incapable of anything resembling terrestrial life.
Anyone who tells you they've found an Earth-like exoplanet is flat-out ignorant. We've found exoplanets in roughly the right orbits to possibly sustain human life -- but the same could be said of Venus and Mars, and look how that turned out.