Do you think aliens in ufos have visited Earth? (And all things UFO)

So wild I ducked off into documentary just last night about USO (submerged ) and "fast movers" underwater.

They are either skunk works type craft or indeed alien intelligent life.

Toward end one guy, I think was paleoarchiologist, put forth his theory that the "Grey men" are us. From future. He took evolution and put in computer simulation with our skeletal features from cromagnon til now and the simulation has our facial features just like the Grey's.

Wild hypothesis.

Made me think of Interstellar.