 any life forms and get any signal back from them. But it may be something more complicated. It's something called the Great Filter. There's some nine steps for an evolutionary path, and maybe something in the universe is preventing life from reaching that point that we would hear from it or reaching an advanced stage. And going back to our science fiction friends, Arthur C. Clarke said this, well, there's two possibilities that exist in this particular situation. Either we are alone in the universe, or maybe we're not,