If life is so rare, then having two planets in the same system with life, even at different epochs, seems absurd. That’s why I said it’s scary. It means that li

If life is so rare, then having two planets in the same system with life, even at different epochs, seems absurd. That’s why I said it’s scary. It means that life can easily get a kickstart but for some reason it doesn’t make it all the way to interstellar civilizations. And that reason could very well be ahead of us and could eliminate humanity. That’s the hypothesis of “The Great Filter”. https://en.wikipedia.org/wiki/Great_Filter https://en.wikipedia.org/wiki/Great_Filter