The notion of a philosophical zombie is used mainly in thought experiments intended to support arguments against forms of physicalism such as materialism and functionalism. Since a zombie is physiologically indistinguishable from human beings, its hypothetical possibility is an argument for a consciousness that is more than the sum of neurological pathways and brain states.

Though philosophical zombies are widely used in thought experiments, the detailed articulation of the concept is not always the same. Philosophical zombies were introduced primarily to argue against specific types of physicalism such as behaviorism, according to which mental states exist solely as behavior.

Belief, desire, thought, consciousness, and so on, are simply certain kinds of behavior or tendencies towards behaviors. A philosophical zombie that is behaviorally indistinguishable from a normal human being, but lacks conscious experiences, is therefore not logically possible according to the behaviorist.

One significant finding of these studies is that a person’s brain seems to commit to certain decisions before the person becomes aware of having made them. Early studies found delays of about half a second, but in 2008, using contemporary brain scanning technology, scientists were able to predict whether subjects would execute an action up to 10 seconds before the subject became aware of having made the choice.

It may be possible, then, that our intuitions about the role of our so-called conscious “intentions” have led us astray. It may be the case that we have confused correlation of conscious self awareness with causation and decision. Alternatively, self awareness may serve only to recognize an unconsciously motivated will that appears before an action.

This possibility is bolstered by various known illusions and studies showing that humans may not have direct access to various internal processes. The discovery that humans only possess a determined will would have implications for moral responsibility. However, these studies have only just begun to shed light on the role that consciousness plays in actions and it is too early to draw very strong conclusions.

According to Aristotle, all things in the material universe have both matter and form. The form of a living thing is its soul. There are three kinds of souls: the vegetative soul of plants, which causes them to grow and decay and nourish themselves, but does not cause motion and sensation; the ‘animal soul’ which causes animals to move and feel; and the rational soul which is the source of consciousness and reasoning which Aristotle believed is found only in man.

A properly organized body is already alive simply by virtue of its structure. However, the property of life or soul is something in addition to the body’s structure. The analogy of a car can be used to explain this interpretation. A running car is running not only because of its structure but also because of the activity in its engine. Likewise, a living body is alive not only because of its structure but also because of an additional property. The soul is this additional property, which a properly-organized body needs in order to be alive.

Though the quality of automatic parallelization has improved in the past few decades, fully automatic parallelization of sequential programs by compilers remains a grand challenge due to its need for complex program analysis and unknown factors such as input data range during compilation.

Gustafson’s Law is a law in computer science which states that any sufficiently large problem can be efficiently parallelized. Gustafson’s law addresses the shortcomings of Amdahl’s law, which does not scale the availability of computing power as the number of machines increase. It removes the fixed problem size or fixed computation load on the parallel processors.

Amdahl’s law, also known as Amdahl’s argument, is named after computer architect Gene Amdahl, and is used to find the maximum expected improvement to an overall system when only part of the system is improved. It is often used in parallel computing to predict the theoretical maximum speedup using multiple processors.

Often referred to as the thousand petaled lotus, it is said to be the most subtle chakra in the system, relating to pure consciousness, and it is from this chakra that all the other chakras emanate. When a yogi is able to raise his or her kundalini or energy of consciousness up to this point, the state of Samadhi, or union with God, is experienced. It is often related to the pineal gland and the violet color.

There are several systems, such as some Tantric and Tibetan ones, that describe chakras in or connected closely above Sahasrara, but that are still part of it as a system. One system commonly described to be in it, sharing some of its petals, is Sri chakra.

In the West, it has been noted by many that Sahasrara expresses a similar archetypal idea to that of Kether or “crown” in the kabbalistic tree of life, which also rests at the head of the tree and represents pure consciousness and union with God.

Most metaphysical naturalists agree that the fundamental constituents of reality, from which everything derives and upon which everything depends, are fundamentally mindless. So if any variety of metaphysical naturalism is true, then any mental properties that exist are causally derived from systems of nonmental properties, powers, or things.

Humanity’s existence as conscious and intelligent animals, is explained not as the outcome of intelligent design nor as a mere accidental combination of chemicals (such as originated life), but as the product of a dynamic, random system that generates highly complex order on its own, without any guidance. Since this entails that the properties of living organisms have been derived from random generation of diversity, genetic drift and natural selection, naturalists interpret individual organisms and species as not having any theleological purpose whatsoever, moral or otherwise, as nature is the cause and nature has no plan.

One major way in which naturalism explains things better than alternatives is that if the supernatural exists, whether as gods, powers, or spirits, it is so silent and inert that its effects are almost never observed, despite vast and extensive searching. Even the relatively few alleged observations take place only under dubious conditions lacking in sound empirical controls or tests, and on those occasions when they are subsequently subjected to sound controls or tests, they turn out to be false. Our inability to uncover clear evidence of anything supernatural is somewhat improbable if anything supernatural exists, but very probable if nothing supernatural exists, and therefore metaphysical naturalism is probably true.

In the brain and spine, the autonomous “repair nerves”, which can expand the blood vessels, connect with pain and compression nerves. These nerves are grouped into many chains called meridians in Chinese medicine. While dreaming, the body also employs the chain-reacting meridians to repair the body and help it grow and develop by sending out very intensive movement-compression signals when the level of growth enzymes increase.

This theory was proposed by Y.D. Tsai as part of his psychosomatic theory of dreams. Inside each brain, there is a program ” I ” (the conscious self) which is distributed over the conscious brain and coordinates mental functions (cortices), such as thinking, imagining, sensing, moving, reasoning … etc. “I” also supervises memory. Many bizarre states of consciousness are actually the results of dissociation of certain mental functions from “I”.

In New Age spirituality, the third eye may alternately symbolize a state of enlightenment or the evocation of mental images having deeply personal spiritual or psychological significance. The third eye is often associated with visions, clairvoyance, precognition, and out-of-body experiences.

In Hinduism and Buddhism, the third eye is a symbol of enlightenment. In the Indian tradition, it is referred to as the gyananakashu, the eye of knowledge, which is the seat of the ‘teacher inside’ or antar-guru. The third eye is commonly denoted in Indian and East Asian iconography with a dot or mark on the forehead of deities or enlightened beings, such as Shiva, the Buddha, or any number of yogis, sages and bodhisattvas. This symbol is called the “Eye of Wisdom”, or, in Buddhism, the urna. In Hinduism, it is believed that the opening of Shiva’s third eye causes the eventual destruction of the physical universe.

According to Max Heindel’s Rosicrucian writings, the third eye is localized in the pituitary body and the pineal gland. It was said that in the far past, when man was in touch with the inner worlds, these organs were his means of ingress thereto, and they will again serve that purpose at a later stage. According to this view, they were connected with the involuntary or sympathetic nervous system, and to regain contact with the inner worlds it is necessary to establish the connection of the pineal gland and the pituitary body with the cerebrospinal nervous system. It was said that when that is accomplished, man will again possess the faculty of perception in the higher worlds, but on a grander scale than it was in the distant past, because it will be in connection with the voluntary nervous system and therefore under the control of his will.

Some writers and researchers, including H. P. Blavatsky and Rick Strassman, have suggested that the third eye is in fact the partially dormant pineal gland, which resides between the two hemispheres of the brain. The pineal gland is said to secrete dimethyltryptamine, which induces dreams, near-death experiences, meditation, or hallucinations. Various types of lower vertebrates, such as reptiles and amphibians, can actually sense light via a third parietal eye, a structure associated with the pineal gland, which serves to regulate their circadian rhythms.