Homo Sapiens
Homo Neandertalensis

Above, we see two skulls. One is of us (Homo Sapiens). The other is the Neanderthal man, named for remains found in Germany, in a limestone pit. (I'm of German descent, so of course I think this is the modern world's way of laughing at us Krauts..."Ha ha! The cousin of the human was found dead in your land! Ha ha! Hitler was so low-brow...").
Scientists and other people paid a lot of money to look at old stuff have speculated that Neanderthal Man, a very close cousin to us, was just as social. Neanderthal man used tools and had language skills. This is back about, oh, say 40,000 years ago. Neanderthal man, in short, wasn't quite as cavish as we thought.
But humans were roaming around, too. That is, hairless, small nosed, white skinned, cutesy humans. We'd be roaming around for about 50,000 years since we left Africa. The northerners turned white to blend in with snow and surroundings. Our hair got finer in some parts of the world. Other humans turned different shades to fit in better with their homes. Everything was going smoothly, except for the occasional glacier melting or forming over our caves.
We just had this problem with the out-law Neanderthals. So, we killed them off. Because in a very American tradition, the cavemen realized, there is only room for one at the top of the food chain, and it definitely should go to the folks with better hygiene.
Now, it has been queried: Why did the humans win and not the other way around? How come Neanderthal didn't use their extremely powerful stature and just wipe us out? Well, that's a really fascinating question to me.
You know, the one thing all those smart people DID figure out is that humans were the species that were able to draw. They expressed themselves artistically. This is what made them different from Neanderthals. The right side of the brain was getting some good protein and fresh air, and By God, it inspired interior decorating.
So that's the answer: Humans won because they were artistic.

Okay, what's the moral of the story? Oddly enough, look at how most creative types are viewed in day to day life. These are the folks that are constantly embellishing stories, getting depressed, being flighty, talking to themselves, stopping everyday activity to read a book or draw a picture or go blog about something arcane. Other people just don't get artistic types. They're weird, aren't they? A mutation from the norm of society. It is these mutation type homo sapien Cave Men that saved humanity. While Brog and Theg were hunting deer, poor little Jank was doodling on the cave wall. "Ughhh, go help your friends, ugg" said Jank's wife. But Jank had a vision, and it had to get out, and so we are left with the primitive and starkly beautiful pictures of deer, mastodons, etc. What a blessing.

For the rest of us artistic types, the people who get laughed at or who get weird looks when saying something off-the-wall...remember: it is our creativity that helped humans evolve. We may still be some kind of mutation. The world needs its Brogs and Thegs, and it needs accountants, too But in order for the species to continue and evolve, the world has to have its art. Otherwise, we would be as stagnant and failed as Neanderthals.