Furthermore, we should believe that loud aliens exist, as that’s our most robust explanation for why humans have appeared so early in the history of the universe. While the current date is 13.8 billion years after the Big Bang, the average star will last over five trillion years. And the standard hard-steps model of the origin of advanced life says it is far more likely to appear at the end of the longest planet lifetimes. But if loud aliens will soon fill the universe, and prevent new advanced life from appearing, that early deadline explains human earliness.
Source: Grabby Aliens