They seem to be mathematical - perhaps because math is math - it is what it is, wherever in the Universe you are...the one thing man can't change.
Who knows, if things keep going like they are in this country, we may welcome someone with a higher intelligence and the old Robert Frost “Stop the world, I want to get off...” may become a real choice - chuckle.
At any event, with all the information coming to light on them, they can't be dismissed off the cuff.
Myself, I sure as he*l hope there's someone in the vast Universe that's more civilized than we are.
TAke a browse through some of the books -
Don’t worry, there is something. But you won’t find Him in a spaceship.