Quotes About Evolution

After a while you may find that the nibbles you get are more interesting than your original purpose of fixing the machine.

Drifting is what one does

We're living in topsy-turvy times, and I think that what causes the topsy-turvy feeling is inadequacy of old forms of thought to deal with new experiences.

We're living in topsy-turvy times, and I think that what causes the topsy-turvy feeling is inadequacy of old forms of thought to deal with new experiences. I've heard it said that the only real learning results from hang-ups, where instead of expanding the branches of what you already know, you have to stop and drift laterally for a while until you come across something that allows you to expand the roots of what you already know.

Things that seem morally obvious and intuitive now weren't necessarily so in the past; many started with nonconforming reasoning.

In the West we nearly all have strong moral intuitions about the wrongness of slavery, child labor, or animal cruelty. But that sure didn't used to be the case. Their wrongness has become an implicit moral intuition, a gut instinct concerning moral truth, only because of the fierce moral reasoning (and activism) of those who came before us, when the average person's moral intuitions were unrecognizably different. Our guts learn their intuitions.

Look at systematic patterns of cultural variation as they pertain to the best and worst of our behaviors. Explore how different types of brains produce different culture and different types of culture produce different brains. In other words, how culture and biology coevolve.3 See the role of ecology in shaping culture.

Because it is the last to mature, by definition the frontal cortex is the brain region least constrained by genes and most sculpted by experience. This must be so, to be the supremely complex social species that we are. Ironically, it seems that the genetic program of human brain development has evolved to, as much as possible, free the frontal cortex from genes.

Why else evolve the fusiform? The shape of women's faces changes subtly during their ovulatory cycle, and men prefer female faces at the time of ovulation.

In other cases the challenge is to appreciate how, though human physiology resembles that of other species, we use the physiology in novel ways.

these capacities evolved so recently that our brains are, if you will, winging it and improvising on the fly when dealing with metaphor. As a result, we are actually pretty lousy at distinguishing between the metaphorical and literal, at remembering that "it's only a figure of speech"—with enormous consequences for our best and worst behaviors.

In other words, the more genomically complex the organism, the larger the percentage of the genome devoted to gene regulation by the environment.

A chicken is an egg's way of making another egg

When deontologism and consequentialism contemplate trolleys, the former is about moral intuitions rooted in the vmPFC, amygdala, and insula, while the latter is the domain of the dlPFC and moral reasoning. Why is it that our automatic, intuitive moral judgments tend to be nonutilitarian? Because, as Greene states in his book, "Our moral brains evolved to help us spread our genes, not to maximize our collective happiness.

The evolutionarily ancient central amygdala plays a key role in innate fears. Surrounding it is the basolateral amygdala (BLA), which is more recently evolved and somewhat resembles the fancy, modern cortex. It's the BLA that learns fear and then sends the news to the central amygdala.

EVOLUTION RESTS ON three steps: (a) certain biological traits are inherited by genetic means; (b) mutations and gene recombination produce variation in those traits; (c) some of those variants confer more "fitness" than others. Given those conditions, over time the frequency of more "fit" gene variants increases in a population.

The human olfactory system is atrophied; roughly 40 percent of a rat's brain is devoted to olfactory processing, versus 3 percent in us.

Ooh, we're going to think subtly. We won't get suckered into simplistic answers, not like those chicken-crossing-the-road neurochemists and chicken evolutionary biologists and chicken psychoanalysts, all living in their own limited categorical buckets.

it's human behavior, human social behavior, and in many cases abnormal human social behavior. And it is indeed a mess, a subject involving brain chemistry, hormones, sensory cues, prenatal environment, early experience, genes, both biological and cultural evolution, and ecological pressures, among other things.

evolution is about reproduction, passing on copies of genes.

no se puede empezar a comprender algo como la agresividad, la competencia, la cooperación y la empatía sin la biología;

Robert M. Sapolsky

Thus, oxytocin and vasopressin facilitate bonding between parent and child and between couples.fn10 Now for something truly charming that evolution has cooked up recently. Sometime in the last fifty thousand years (i.e., less than 0.1 percent of the time that oxytocin has existed), the brains of humans and domesticated wolves evolved a new response to oxytocin: when a dog and its owner (but not a stranger) interact, they secrete oxytocin.

A large body of evidence suggests that stress-related disease emerges, predominantly, out of the fact that we so often activate a physiological system that has evolved for responding to acute physical emergencies, but we turn it on for months on end, worrying about mortgages, relationships, and promotions.