Three Ideas

Idle in-brain conversations. Background noise that rambles on and sometimes if we’re lucky goes somewhere. I was sitting eating a burrito the other day. This noise went somewhere; what do yo think?

1st idea: Evolution. Selection. The world of man. A species’ environment determines which genes are favored. It determines what genes stick around. In humans, self-determined environment (society) is usually more important than the natural world. So there’s a feedback loop. People create their environment, which favors people who can better live in it, and have children who continue to live a life to which they are suited. A possible genetic tendency towards cultural aspects. Accelerated specialization. Patterns within a culture and the ensuing sexual selection might explain geographic racial features. How an individual deals with turmoil and struggle is tied with one’s spiritual beliefs. We can have a culture that shapes its gods a certain way, and people within it who adhere to those gods. Feedback. Some concept emerges somewhere, spreads through society, and favors those predisposed to it. Or it might find more fertile minds somewhere else, and the seeds will grow elsewhere. Memetics influencing genetics. For instance, Greece no longer is made of Greeks, but ethnic Turks. Yet in academia, a major in Classics might as well be called “European Studies.” Through the influence of ideas their values live on in a populace both inheriting them and built to inherit them.

2nd idea: Predation. Digestion. Nature’s law. Organisms get better nutrition from sources closest to themselves. Carnivores spend less time eating than herbivores do, because it’s more work digesting plant fibers than animal protein. Go back far enough and all organisms are theoretically related. Life was just self-replicating bacteria. A few billion years later some became Eukaryotes, which are distinguished by their ability to eat other things (like bacteria). Everything that grew from them—animals, plants, fungi—inherited the capacity to derive sustenance from other life. The more alike, the easier that is.

3rd idea: I find those two ideas I just had quite interesting. I wonder if I can link them together. Let’s see.. they’re both centered around evolution and assimilation. Things diverge over countless years and then re-absorb quickly, converging like long-lost puddles. If they were puddles of oil and water they wouldn’t come together so easily. It’s about how easy it is. How easy it is to assimilate something is directly correlated to how similar it is. There’s my topic sentence.

Hm. That was interesting. Those idle thoughts led somewhere. Even if it turns out there’s an existing scientific theory that says about as much, it’s fun to derive these concepts myself. I do recommend trying it sometime.

photos by cwiener08 and rusty shackelfurt

The Mating Memes

Suppose you take a few species of apes that lived in Africa about ten million years ago. Think of these species as nearly identical, but seperate populations. Now turn loose on each species the force of runaway sexual selection—an evolutionary positive feedback loop of genetic traits and the mating preference for those traits. One species might develop a runaway preference for large muscles, and turn into gorillas. Another might develop a runaway preference for constant sex, and turn into bonobos. A third species might develop a runaway preference for intelligence, and turn into us.

Hypacrosaurus - no giant tail, but possibly very colorful Intelligence is a fitness indicator, which might be why we have it. Animals use them to judge potential mates. The brain—like a gigantic shiny colorful tail—is a good choice. It’s sensitive to the animal’s condition, it’s hard to fake, and it’s a pretty good show of what sexy genes you have. A mind gets pretty screwed-up if you have a screwed-up existence—and crazy isn’t sexy. Conversely, a good mind is, and it shows. Story-telling, humor, playfulness, creativity, wit, kindness, a broad vocabulary, social savvy, imaginative problem-solving, and refined taste are all mental fitness indicators used by humans. All these sexy personality traits lead to more sexy persons, the better brain genes making minds bigger and better.

That’s the idea behind Geoffrey Miller’s The Mating Mind, in particular the chapter appropriately called “A Mind Fit for Mating.” Pages 77 and 111 are partially (and liberally) paraphrased above. His hypothesis is that our swollen primate cerebellums are the result of a sexual fetish preference our ancestors were lucky enough to stumble upon. Her+Him Stick Figures — now a memeAnd because our courtship (and brain evolution) got so carried away with itself, we very accidentally discovered all these really cool survival mechanisms like agriculture, language, architecture, metal-working, medicine, and the other stuff you can research in Civilization. Even more astounding is that all the quintessentially human self-expressives like literature, art, philosophy, music, dance, and making comic books are for mating purposes just ornamentation to show off our big sexy brains.Sexy brains read more of my blog.