How do we know the truth is true?

psychology: How do we know what reality is?

Christoph Waltz

was used to portray an SS officer in the filmInglorious Basterds Awarded the Oscar for best supporting actor. In his new film, he plays a ringmaster - the romance Water for elephants hits theaters on April 28th.

An invention of the brain

“Reality is just an interpretation of the brain. Let's take the color red as an example. It is actually the brain cells that organize a jumble of light rays so that we can orientate ourselves. Red is an invention of the brain, which interprets wavelengths as color. This function arose in the course of evolution because it was useful thousands of years ago, for example so that people could recognize fruit in the jungle. Optical illusions show how much the brain cheats: In an attempt to create order, we see things that are not there. A look through a microscope is convincing that the world is completely different from the way it is seen by the naked eye. How much reality is a question of subjective interpretation is also shown by dreams and hallucinations, which one often experiences as real. "

Erich Kasten, psychotherapist and professor of psychology at the Lübeck University Hospital

Everything in other universes as well

“Reality is that which exists outside of people's thinking. The most effective way to learn about it is through modern science. All assumptions about the world are continuously checked. Today we can essentially describe our universe from the smallest structures to the limits of the cosmos. More and more cosmologists are now of the opinion that there is not only our own universe, but a so-called multiverse, which consists of an infinite number of universes. If these exist, everything that exists in our universe occurs in an identical or similar form any number of times in other universes. This theory of the eternal formation of ever new universes from a so-called quantum foam is entirely plausible. "

Heinz Oberhummer, professor emeritus for astrophysics and cosmology

New technology, new reality

»We always suspect a parallel world when we have no or only difficult access to a technical experience. Teenagers in 1982 who had their Walkman headphones on had "cut themselves off," they were in a different reality. In the meantime most of them have got used to this sight and have had experience with mobile music listening themselves. Today young people have "disengaged themselves from reality" sitting in front of an online role-playing game. In 30 years' time, this will also count as everyday behavior. We always differentiate between reality and parallel world when something about the technology bothers us, i.e. we perceive it. From a media-scientific point of view, one can say: Reality is what we can perceive with means that we have taken for granted. "

Mathias Mertens, author of the book »Loading time. Other computer gaming stories "