My Pet Theory Based On Nothing, But I Like It Anyway. . .

I think they are us. I think they are us in the future, and they have come back in time to see what the hell went wrong with the process of evolution. I think pollution, diets messed up by chemicals and lack of proper nutrition, and who knows what else, over time has evolved us into "them". Now they are curious, and so they come back, whisk us away, and perform all these tests to see how much change has occured over how many thousands/millions of years. Maybe even warning us, or trying to change fate. Yeah, its "out there", but on this fourm, what isn't? :)