#455 – Adam Frank: Alien Civilizations and the Search for Extraterrestrial Life

1430.263 - 1447.277 Adam Frank

I just finished a paper where we were looking at something called the hard steps model, which is this model that's been out there for a long time that purports to say intelligent life in the universe will be really rare. And it made all these assumptions about the Earth's history, particularly the history of life and the history of the planet, or have nothing to do with each other.