Usually, when we think of "survival of the fittest," we think about the survival of the biggest, strongest, fastest or smartest. But actually, in evolutionary terms, the "fittest" is just the animal or plant best suited for the circumstances, whether that animal is a lizard uniquely suited for the desert or a Golden Retriever with an uncanny but heartwarming knack for basketball. But you're pretty smart, so you probably knew that already.
What you might not realize is that some of the behaviors that get you swirlied today were survival strategies that kept you alive thousands of years ago. Behaviors such as ...
We're not talking about the strong, silent type who's only shy because he prefers to let his fists/gun/boner do the talking. We're talking about guys who are so unsure of themselves that they can't even look you in the eye. They've been called, "yellow," "shook" and "NERRRRRRD" depending on whether they're being bullied in the 50s, inner city or 80s movies. It all comes down to confidence. The shyer and more easily embarrassed a person is, the less manly they seem.
Check out this confident hunk of manliness.
Its Badass Origins
Have you ever looked a gorilla in the eye? If so, you're either lucky to be alive, or currently being dismembered by a primate. Gorillas hate that shit. Eye contact and smiles are like subtle ways to tell a gorilla you'd like to see them try to kick your ass. And it's not just normal animal skittishness. Gorillas have a serious problem, and it's your stupid face. One zoo even invented special glasses to protect visitors from eye contact -- instead opting to make making look like they're having the most prolonged orgasms ever ...
"We appreciate the gesture guys, but come on. We have to sleep at night too." -- Gorillas
As mankind made its evolutionary transition from ape to human, scientists think that there was a time when a flushed cheek and a downcast eye was a key survival instinct. When one species was still evolving into the other, it meant your genetic line wouldn't end in a dismembered pile of limbs. Blushing would have been especially useful, since it's an involuntary reaction. No matter how hard you tried to maintain eye contact, your blushing face broadcasts just how close you were to soiling your loincloth.
On the other hand, losing bladder control directly on a shark usually has negative repercussions.
Blushing, after all, signals remorse. Since it can't be faked or hidden, researchers think that our ancestors evolved the function as a display of appeasement towards those that we've wronged. Or who could kick our ass. The walk back to the cave might have been shameful, but it was accomplished with fully intact sexual organs -- the only victory that matters when it comes to the gene pool.
The part of the species that averted their eyes and turned beet red no matter how much they wanted to stand up to the big aggressive guy taking their lunch lived to see another day, and breed with the (presumably underwhelmed, but realistic) females of the species. The big guy eating our lunch might have won that battle, but that same unwavering belief in himself was what sent him out in a blaze of monkey-fisted Neanderthal asswhoop. The meek end up inheriting the Earth by default.
"Hmm, it's a choice between that nerd or the chunks of Brad's intestines that were left behind after the ass kicking."