With every scientific advance , man has been removed further and further away from the center of the world . The Earth , which was once Considered to be the center of everything , was demoted from this elevated position by the Simpler Copernican sun - centered worldview . Our solar system turned out to be far from the center of our galaxy , the Milky Way . Hubble discovered as recently as the 1920s that the Milky Way is not ( as had hitherto been believed ) the entire universe , but there are countless other galaxies . The last ten years the best currently Cosmological observations indicate that the very material we are made of ; atoms , is only a small " contamination " in the universe 's total content. Most of it seems instead to be completely unknown ingredients and energy fields : dark matter and dark energy . The more we learn about nature , the more insignificant Humans seem to be .
Then it comes as a welcome shock that quantum physics , our most modern theory , puts us back in the center again ! It turns out that we create reality . We can for example choose if light should be a wave or a particle stream , two mutually absolutely irreconcilable qualities , just by choosing roomates experiments we want to do . If we perform a double slit experiment , like Thomas Young in 1803 when he Showed with 100 % certainty that light is a wave motion , we force the light to be a wave . If we instead do a photoelectric experiment ( such as in a modern solar panel ) , we force the light to be a stream of particles , photons . Einstein received the Nobel Prize for his explanation that light in this case with 100 % certainty is composed of particles . Thus light is with 200 % certainty incomprehensible ...
Even worse is that , According to quantum physics , it should be impossible to ever get a definite outcome for anything at all . It is characteristic of quantum physics that can Coexist many different states , and usually do . For example , a single electron in an atom can be in infinitely many states simultaneously . Thus it can act as a perfect border guard and "be everywhere at once" , and Prevent other atoms from getting too close while attracting them if they are too far away . It Explains in particular why the atom is not unstable ( as it should be According to the classical , pre - quantum theory) and why the periodic table looks like it does . The problem is that quantum mechanics must be universal , that is , apply Regardless of the size of the things you describe . Why , then , do we not see these ghostly overlays of objects even at our own level ? Like for example cats that are both alive and dead ? ... Schrödinger , in 1935 , wrote an article about this , and Introduced " Schrödinger 's Cat " - the poor creature roomates is forced to be both alive and dead at the same time - to show how absurd quantum physics really is if it is allowed to Invade our own level . Somewhere along the line the quantum description is broken , but nobody knows how, or why . It could even be in our own minds .
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