Saturday, 27 February 2016

What’s the Point of Being Human? The Best Answer So Far.

What’s the Point of Being Human? The Best Answer So Far.


Updated 12:41 pm, Monday, February 8, 2016

The point of being human is to push the envelope of being human. This is worth remembering when times are tough and we lose confidence in ourselves. No other creature on earth has the capacity to redefine itself. We do.  How humans gained this ability remains a totally mystery. Looking at physical remains, it’s possible—although controversial—to outline the evolutionary march from ape to hominid, from hominid to Homo, and finally from Homo to our specific species Homo sapiens. 
But the physical evidence is blurry at times, and even a simple achievement like the discovery of fire is up in the air; estimates could be off by hundreds of thousands of years. But not a single physical trait explains why we are self-aware. Awareness gave us the ability to push the envelope of being human. Ten thousand years ago the higher brain, the cerebral cortex, was a finished structure, more or less. In other creatures, once their brains are finished, that’s the limit. An elephant’s huge brain allows, we think, for emotional empathy. Elephants grieve over the dead and are emotionally tied to one another. 
But an elephant’s brain can’t do math, write poetry, or invent the atom bomb. The human brain is the secret, physically speaking, behind our incredible abilities with language, tool-making, art, and weaponry. But no one knows the secret behind how the mind uses this brain. On the one hand, we remain totally confused about who we really are. We don’t even know if we are basically good or bad. At the moment, opinion has turned us into baddies destroying the environment. But that’s a lopsided view, given the fact that no matter how horrible our behavior, we can look in the mirror and change it. 
If this is true—and it seems undeniable—then what’s the next stage in pushing the envelope? No one knows, because the whole point of human evolution is that you can’t predict where it’s going. Indeed, none of us knows what our next thought will be. We plunge into the unknown at every second. But in the face of confusion, uncertainty, and low morale, one possibility remains untarnished. We are likely to become even more self-aware. That’s the pattern that has held good for all of recorded history, and despite every catastrophic setback and horrifying turn of events, the march of awareness continues. 
Some people have even made awareness their life’s work. They take it upon themselves to push the envelope into higher consciousness. What they report back to the rest of us then becomes the new frontier. “Here’s what we can become. Now choose.” That’s the message repeated over and over again. 
Recently I’ve been inspired by Dr. A. K. Mukhopadhyay of the All Indian Institute of Medical Sciences, who has developed the most important model for where human beings are headed, based on this ever-renewing theme of higher consciousness.  In a sense Mukhopadhyay has picked up the thread offered by Jonas Salk, whose later career after achieving worldwide fame for the vaccine that eradicated polio was devoted to the future path of humanity. Decades before we got ourselves into the present ecological crisis, Salk saw that the evolution of our species would no longer be physical. The only way forward would be mental and spiritual. The force of evolution, which for millions of years has pushed on the physical plane, has now been internalized. The inner world is our future. 
Mukhopadhyay has taken this insight, which is now accepted by millions of people, and has convincingly shown (both in his books and more succinctly through YouTube videos) that higher consciousness isn’t a spiritual aspiration open to a few gifted saints, sages, and gurus. In reality it’s a universal trait; we would not be who we are without it. I am synopsizing here, but the essence of Mukhopadhyay’s insight lies in the term “supracortical consciousness,” and I will spend the rest of this post unfolding why this obscure term holds the key to a leap in human evolution. 
The standard view of human consciousness is physical, based on primitive life forms that exhibit no mind to evolved species like reptiles that have advanced nervous system but still no mind, then lower primates, higher primates, and finally Homo sapiens—in short, a 4-billion-year evolutionary march that saw mind emerge very gradually. Humans may feel guilty about many things, from war and crime to our despoiling of Nature, but we still see ourselves standing on the highest rung of evolution. Until we evolved, mind was totally or partially undeveloped, as witness our unique higher brain. 
The problem with this physical view of consciousness is that it’s like saying that a better computer will make you smarter. In reality, it’s the other way around. When you’re smarter, you can build a better computer. That is exactly what nature did, in Mukhopadhyay’s view. Higher consciousness built a better brain, and using this ever more intricate mechanism, it pushed the envelope of mind—a process that hasn’t ended and never will. There has always been an organizing intelligence higher (supra) than the cortex. Hence Mukhopadhyay’s choice of “supracortical” to describe it. 
The notion of a cosmic mind that human evolution is trying to reach isn’t new. It lies behind every spiritual tradition, even though the name for this supracortical consciousness has shifted. Sometimes it’s called God, sometimes Atman, Brahman, soul, or simply spirit. Mukhopadhyay unabashedly links his thinking to India’s spiritual past, but his overarching aim is scientific. In this regard he has offered a brilliant and very challenging hypothesis, which says that current sciences, including biology, chemistry, physics, medicine, and even the “soft” science of psychology, cannot explain what makes us human unless supracortical consciousness is introduced. 
Without it, a host of mysteries remain unsolved: 
1.     Why did Homo sapiens’ higher mind evolve? There doesn’t seem to be a need for it, since lower species have thrived without self-awareness for billions of years. 
2.     How did the human body learn to self-organize? Every cell has self-interest in surviving and reproducing. Yet there is no physical structure that contains the invisible ability to have a self in the first place. 
3.     Why do our bodies hold on to energy? The law of entropy, which governs all inert physical objects, dictates that any concentration of energy will dissipate, which is why ice melts and stars die. But life is an anomaly, a so-called island of negative entropy. All living things increase their store of energy. Why did nature take this route when entropy was left unchecked everywhere else in the cosmos? 
4.     Where did evolution come from? The universe began as a swirling chaos, a kind of quantum soup that had no reason to evolve. Entropy already had the infant cosmos in its grip. Beyond a few constants that allowed primitive matter to clump into atoms and molecules, the journey from interstellar dust to human beings exhibits no logical reason. It happened because it happened. 
5.     Why is the universe fine-tuned? Fine-tuning is the term for how the various aspects of time, space, matter, and energy mesh to sustain a viable universe. With a change of less than a millionth in any constant, sometimes less than a billionth, the infant universe would have either collapsed in on itself or flown apart too fast for atoms to form. Instead, it turned into the exact universe needed for human beings to call home. 
The beauty of Mukhopadhyay’s interpretation is that he encompasses the whole picture, giving each science its due while steadfastly asserting that no branch of science can explain why reality is what it is. All come up against dead ends. Physics cannot explain the origin of space and time. Biology cannot explain the spark of life and why it caused simple sugars and amino acids to become living entities. Psychology cannot explain where thoughts come from. Neuroscience cannot explain how the dark, silent, watery recesses of the brain create a four-dimensional picture of the world filled with light, sound, and color. 
The only way to get past these dead ends is to find a single organizer that knows what it is doing.  It has known all along that evolution, life, creativity, intelligence, and Homo sapiens would emerge, because at the level of cosmic mind, only an all-encompassing vision that attended to the smallest subatomic particle and the vast reaches of outer space could possibly link them into a dynamic, coherent whole. 
With this in mind, we now know why human beings keep pushing the envelope of being human. Our self-awareness extends beyond the cortex, which after all is merely a physical receiver for what consciousness wants to tell us. We are supracortical creatures. We always have been, but like an infant that lives for today without a vision of adulthood, we are confined inside the present moment. The present moment is a laboratory of possibilities. Infinite possibilities are embedded in higher consciousness. It’s our destiny, enclosed in time and space, to unfold them one by one, to be amazed by what it means to be human, and then to move on to whatever lies ahead.  

http://www.sfgate.com/opinion/chopra/article/What-s-the-Point-of-Being-Human-The-Best-6812996.php

5 Human Traits That Are Leftovers From Evolution

5 Human Traits That Are Leftovers From Evolution


Feb 12, 2016

In the 4 billion years that life has existed on Earth, modern humans have been around for about 200,000 years of that.
In that amount of time, we've had countless ancestors who lived in almost every kind of environment. This resulted a large number of adaptations that hung around even after they weren't needed anymore, or needed in a much smaller capacity. These are known as "vestigial structures."
So why do we bother making them if we don't need them?
While they aren't helping us out, they aren't necessarily hurting either. Sure, some of these structures, like the appendix, tonsils, and wisdom teeth, occasionally give people trouble. But they don't cause enough harm to stop someone from living to adulthood and passing on their genes.
Here are 5 lesser-known vestigial structures that serve little purpose beyond reminding us of our amazing evolutionary heritage.

1. Goosebumps

When humans get cold or scared, muscles in the skin called arrector pili flex, causing goosebumps. For animals with a lot of body hair, this causes the hair to stand on end — making them look bigger in the face of predators, or making themselves warmer in the cold.
Human body hair is too short and fine for either of these to work, but the reflex is still deeply engrained and makes the attempt anyway.

2. Plica semilunaris

Ever wonder what that pink fold of flesh near the corner of the eye is for? On humans, it's a remnant of a membrane (called a nictitating membrane) we no longer have control over. For some other mammals, fish, birds, and amphibians, however, this membrane acts like a third eyelid, covering the eye horizontally.
This trait atrophied as humans didn't really need it anymore.The membrane is translucent, so while it does provide and added layer of protection against water, dirt, and high winds, it also obscures vision slightly.

3. The outer ear

Humans still do heavily depend on the ear for hearing, but we don't need it as much as some species do. Our outer ear is attached to muscles that, for many people, don't do much anymore. Our ancestors, like many of the animals that are still around today, had a lot of control over turning the ear in order to listen for predators or pick up the sound of prey. While some people are still able to wiggle their ears slightly, those muscles largely have no purpose.
Another feature on the outside of the ear is a little point of skin known as Darwin's tubercle, which relates to the pointier ears of other species. It is more prominent in some populations of humans than others.

4. Male nipples

Shutterstock
Shutterstock
Women need breasts to feed milk to their young, but since men don't do that, why do they even have nipples?
Estrogen present in the earliest stages of embryonic development causes the nipples to begin to form, based on cues from the X chromosome. When certain genes affiliated with male features from the Y chromosome kick in, the production of the breasts stops. Some men are able to lactate a little bit, but overall, they don't have a purpose.

5. Palmar grip reflex

Touching a newborn's palm will cause them to grab tight, and touching the bottom of their feet causes them to curl their toes, while rubbing the back of the hand or top of the foot causes them to open them up.
This phenomenon is known as the palmar grasp reflex and came about when our ancestors, who had much more body hair, needed to have their babies hang on for dear life as they traveled through the trees. Because they were tree-dwellers, their feet were much more adept at grabbing things as well.

http://aplus.com/a/human-vestigial-traits

Menopause in humans evolved because sons fail to fly nest

Menopause in humans evolved because sons fail to fly nest

A two-year study looked at the possibility that women live long past the reproductive age in order to help successfully raise their nearby grandchildren

    The onset of the menopause in humans has been linked to men failing to fly the nest.
    Women have the unusual trait of undergoing the menopause - in contrast with the females of most other species who reproduce until the day they die.
    Researchers at the University of Liverpool and Liverpool John Moores University discovered the evolution of the menopause in humans was boosted by the tendency for sons and grandsons to remain living close to home.
    The two-year study looked at the "grandma hypothesis", that women lived long past the reproductive age in order to help successfully raise their grandchildren.
    Co-author and zoologist Dr Hazel Nichols, from Liverpool John Moores, said: "It is important that the investigation focuses on the males staying, because traditionally in the human race a woman will leave her family when she settles down with a man.
    "When she gets married she would go off and join him. She won't have any relatives to help out.
    "When she gets older, she will have children and she will have her descendants to help.
    "The idea with this investigation is to compare species, and the idea is that when human males stay at home, the older women will enter the menopause because they are required to help out with raising younger members of the family rather than continuing to have their own children."
    Evolutionary biologist Dr Kevin Arbuckle, from the University of Liverpool, said: "Our results suggest that the menopause arose through a non-adaptive 'mismatch' between lifespan and reproductive span.
    "Subsequently we think that in populations where males remained at home and females dispersed to reproduce, an adaptive benefit drove the extension of this post-reproductive period.
    "This adaptive benefit could have come from grandmothers looking after their sons and grandsons at home.
    "As females tend to reproduce more reliably than males, this additional family support could have made it more likely that their grandsons successfully reproduced."

    Menopause in humans evolved because sons fail to fly nest

    A two-year study looked at the possibility that women live long past the reproductive age in order to help successfully raise their nearby grandchildren

    Dear Coleen: After forty seven years, husband says it's all over
    Responsibilities: Human females are thought to live past reproductive age due to grandchild concerns (picture posed by model)
    The onset of the menopause in humans has been linked to men failing to fly the nest.
    Women have the unusual trait of undergoing the menopause - in contrast with the females of most other species who reproduce until the day they die.
    Researchers at the University of Liverpool and Liverpool John Moores University discovered the evolution of the menopause in humans was boosted by the tendency for sons and grandsons to remain living close to home.
    The two-year study looked at the "grandma hypothesis", that women lived long past the reproductive age in order to help successfully raise their grandchildren.
    Grandchildren running to greet grandparents
    Unfinished business: Grandma now needs to raise her grandkids! (picture posed by models)
    Co-author and zoologist Dr Hazel Nichols, from Liverpool John Moores, said: "It is important that the investigation focuses on the males staying, because traditionally in the human race a woman will leave her family when she settles down with a man.
    "When she gets married she would go off and join him. She won't have any relatives to help out.
    "When she gets older, she will have children and she will have her descendants to help.
    "The idea with this investigation is to compare species, and the idea is that when human males stay at home, the older women will enter the menopause because they are required to help out with raising younger members of the family rather than continuing to have their own children."
    Evolutionary biologist Dr Kevin Arbuckle, from the University of Liverpool, said: "Our results suggest that the menopause arose through a non-adaptive 'mismatch' between lifespan and reproductive span.
    "Subsequently we think that in populations where males remained at home and females dispersed to reproduce, an adaptive benefit drove the extension of this post-reproductive period.
    "This adaptive benefit could have come from grandmothers looking after their sons and grandsons at home.
    "As females tend to reproduce more reliably than males, this additional family support could have made it more likely that their grandsons successfully reproduced."
    The study, published in the Biology Letters journal, used data from 26 different mammal species, including three different tribal or historical human populations, to test for the effects of lifespan, group size and male and female philopatry - the tendency to remain within a family group - on post-reproductive lifespan.
    http://www.mirror.co.uk/news/uk-news/menopause-humans-evolved-because-sons-7384036

What a caveman’s DNA says about the Paleo diet movement: Humans have evolved since the Stone Age

What a caveman’s DNA says about the Paleo diet movement: Humans have evolved since the Stone Age

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