Mel Brooks??  No way!  Say it ain't so!  He always seemed like such a nice guy...
Imagine how much different the world would be if, rather than try and kill each other, those first proto-humans just succumbed to a bout of self-gratification instead...
 
 Can't trust anybody anymore, can 'ya...
 
 (There's a hidden reference here...don't go getting all serious, now...)