The forest was alive with the sounds of thousands of apes, jumping and screeching and throwing their excriment at one another. Suddenly one of them paused, a look of what could almost pass as pensiveness on his tiny, stupid face.

"You know what?" it said clearly, causing all the others to halt. A hush fell over the entire forest. "It might be good," the ape continued, "to just stop all this pointless jumping and throwing of feces and settled down. . . maybe built some buildings, invented a few things. I've got a great idea- we could call it the wheel, and-"

That's when a large stone struck the back of his skull, and the first human to have coherent thought fell dead. As soon as he hit the ground, his comrades resumed their hooting and flinging with the same energy as before the ugly incident.