it will have been ...

sometime in the distant future or tomorrow become little colorful men Land on our earth and notice that they are not the only living things were in infinity and that we were close to it Colonize the moon and mars and then they will find out that the most advanced Creatures of this planet poison the air you breathe and that you have your drinking water and have polluted the soil from which they obtained their food and the little colorful men will ask the question whether the "most primitive" unicellular organism didn't have to have a brain anymore than the species homo sapiens philosophicus or do you know an animal that shits in its own nest?