 Now, evolution, just as a theory of where life came from, is one thing, but it's almost never been just a theory of where life came from. It's always had a kind of progressive component. That is, it's a theory of improvement over time. So if I project that there is a being on another planet or a civilization on another planet, but they've been there for 300,000 more years than we've been here, then they must have progressed.