Perhaps our human senses are deceiving us — maybe existence is an illusion, and reality isn't real. The idea that everything we know is merely a construction of our minds is investigated in the next episode of the Science Channel program "Through the Wormhole," hosted by Morgan Freeman.
The episode premieres Wednesday July 17 at 10 p. And how can we know that the world we see matches what anyone else experiences? Human senses are fallible. What people think they perceive is actually filtered and processed by the brain to construct a useful view of the world.
Normally, this filtering is helpful, allowing people to sort out important information from the barrage of data that comes in every minute from their environment. But this filtering ability can become a weakness, as it often does when we're watching a magician. For instance, a magician often directs the audience's gaze to one hand while he does something with the other.
But Rosenblum doesn't see the human tendency to fall for such misdirection as evidence that all of reality exists only in our minds. As members of society, people create a form of collective reality. For example, money, in reality, consists of pieces of paper, yet those papers represent something much more valuable.
The pieces of paper have the power of life and death, Freeman says — but they wouldn't Supnotic - Reality worth anything Lethal (Stupid Bass) - UTFO featuring Anthrax - Lethal people didn't believe in their power. Another fiction humans collectively engage in is optimism. Neuroscientist Tali Sharot of University College London studies "the optimism bias": Supnotic - Reality tendency to generally overestimate the likelihood of positive events in their lives and underestimate the likelihood of negative ones.
In the show, Sharot does an experiment in which she puts a man in a brain scanner, and asks him to rate the likelihood that negative events, such as lung cancer, will happen to him. Then, he is given the true likelihood. When the actual risks differ from the man's estimates, his frontal lobes light up. But the brain area does a better job of reacting to the discrepancy when the reality is more positive than what Supnotic - Reality guessed, Supnotic - Reality said.
This shows how humans are somewhat hardwired to be optimistic. That may be because optimism "tends to have a lot of positive outcomes," Sharot told LiveScience. Optimistic people tend to live longerhealthier, more successful lives, she said, and the act of positive thinking can be a self-fulfilling prophecy. But this slightly distorted view of the world can also be a weakness — a person might continue to smoke because they don't expect Supnotic - Reality get lung cancer, for example.
Being more realistic is important in some cases, Sharot cautioned. Physicists look beyond the human mind for external reality, but even that reality isn't absolute truth.
Fundamental reality as scientists understand it is based on quantum mechanics, a realm where all manner of strange things occur. An electron can behave as either a particle or Tatiana - Acapulco Rock wave, depending on how one measures it. And scientists can measure either a particle's position or its momentum at any given time, but never both.
But so Supnotic - Reality of this reality is by definition unknowable. The universe may turn out to have more dimensions Supnotic - Reality we know about, where fundamental forces behave very differently than how we perceive them. For example, gravity is the weakest of the four fundamental forces, but in other dimensions, it could be just as strong. The universe could even be a kind of hologram. The amount of information that can be stored in a region of space is proportional to the region's surface area, rather than its volume — a property known as the holographic principle.
One possible implication is that reality is actually two-dimensional, and the three-dimensional world is merely an illusion, which would explain some of the Electro II - The Revenge - The Meteors - The Mutant Monkey And The Surfers From Zorch of quantum mechanics. All of these views of the world — those that we perceive in our minds, and those that physicists discover in the universe — are flavors of reality.
What humans perceive as reality may be no more than an illusion. But in the end, maybe that doesn't matter. Live Science. Is the world we perceive truly real?
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