"Page0042" - читать интересную книгу автора (Bloom Howard - The Lucifer Principle (htm))4 4 4 un death. She offers a carnivore the options of dying by starvation or of killing for a meal. Nature is like a sculptor continually improving upon her work, but to do it she chisels away at living flesh. What's worse, she has built her morally reprehensible modus operandi into our physiology. If you occasionally feel that you are of several minds on one subject, you are probably right. In reality, you have several brains. And those brains don't always agree. Dr. Paul D. MacLean was the researcher who first posited the concept of "the triune brain." According to MacLean, near the base of your skull you'll find the stem of the brain, poking up from the spinal column like the unadorned end of a walking stick. Sitting atop that rudimentary stump is a mass of cerebral tissue bequeathed us by our earliest totally land-dwelling ancestors--the reptiles.8 When these beasts turned their backs on the sea roughly 300 million years ago and hobbled inland, their primary focus was simple survival. The new landlubbers needed to hunt, to find a mate, to carve out territory and to fight in that territory's defense. The neural machinery they evolved took care of these elementary functions. MacLean calls it the reptile brain. The reptile brain still sits inside our skull like the pit at the center of a peach. It is a vigorous participant in our mental affairs, pumping its primitive, instinctual orders to us at all hours of the day and night. Eons after the first reptiles ambled away from the beach, their great, great grandchildren many times removed evolved a few dramatic product improvements. These upgrades included fur, warm blood, the ability to nurture eggs inside their own bodies, and the portable supply of baby food we know as milk. The remodeled creatures were no longer reptiles. They had become mammals. Mammals' innovative features gave them the ability to leave the lush tropics and make their way into the chilly north. Their warm blood allowed them, in fact, to survive the rigors of the occasional ice age. But warm blood exacted its costs. It demanded that mammal parents not simply lay an egg and wander off. It forced mammal mothers to brood over their children for years. And it required a tighter social iverse. She presents her children with a choice between death and 4 4 4 un death. She offers a carnivore the options of dying by starvation or of killing for a meal. Nature is like a sculptor continually improving upon her work, but to do it she chisels away at living flesh. What's worse, she has built her morally reprehensible modus operandi into our physiology. If you occasionally feel that you are of several minds on one subject, you are probably right. In reality, you have several brains. And those brains don't always agree. Dr. Paul D. MacLean was the researcher who first posited the concept of "the triune brain." According to MacLean, near the base of your skull you'll find the stem of the brain, poking up from the spinal column like the unadorned end of a walking stick. Sitting atop that rudimentary stump is a mass of cerebral tissue bequeathed us by our earliest totally land-dwelling ancestors--the reptiles.8 When these beasts turned their backs on the sea roughly 300 million years ago and hobbled inland, their primary focus was simple survival. The new landlubbers needed to hunt, to find a mate, to carve out territory and to fight in that territory's defense. The neural machinery they evolved took care of these elementary functions. MacLean calls it the reptile brain. The reptile brain still sits inside our skull like the pit at the center of a peach. It is a vigorous participant in our mental affairs, pumping its primitive, instinctual orders to us at all hours of the day and night. Eons after the first reptiles ambled away from the beach, their great, great grandchildren many times removed evolved a few dramatic product improvements. These upgrades included fur, warm blood, the ability to nurture eggs inside their own bodies, and the portable supply of baby food we know as milk. The remodeled creatures were no longer reptiles. They had become mammals. Mammals' innovative features gave them the ability to leave the lush tropics and make their way into the chilly north. Their warm blood allowed them, in fact, to survive the rigors of the occasional ice age. But warm blood exacted its costs. It demanded that mammal parents not simply lay an egg and wander off. It forced mammal mothers to brood over their children for years. And it required a tighter social iverse. She presents her children with a choice between death and |
|
© 2026 Библиотека RealLib.org
(support [a t] reallib.org) |