Alex Berezow - We Are Effectively Alone In The UniverseIt does not matter if intelligent life exists elsewhere. We will never find each other. Key TakeawaysThe debate over extraterrestrial life has shifted from fringe to mainstream.The belief that humans eventually will encounter aliens is based on two assumptions: (1) life evolves easily, and (2) interstellar travel is possible and practical.Neither of these assumptions is likely to be true.