Very interesting, but this assumes life evolves to Type II civ. I mean, looking at our own planet, it seems this might be extremely unlikely. To the best of m

Very interesting, but this assumes life evolves to Type II civ. I mean, looking at our own planet, it seems this might be extremely unlikely. To the best of my knowledge, another Planet Earth could possibly be within a few hundred ly of us(0.000000001 of known universe), and we'd have no idea(1)..? 1-https://www.centauri-dreams.org/2012/05/31/is-our-civilization-detectable/ https://www.centauri-dreams.org/2012/05/31/is-our-civilizati...