Do we live the real world? Or is it all in our minds? Do we see the universe as it is? Or do our senses deceive us? Sciencfiticfic observation revelas hidden realities. The judgement of our senses cannot be trusted. And our our basic assumptions about life and the universe may be false. Is existence an illusion?Is reality real? How can we be certain the universe around us actually exists? and how can we know that the world we see matches what anyone else experiences? Our senses make reality seem real enough, but what if it isn’t? Our reality may be a fragile tissue of illusions, illusions about ourselves, our society, and even the whole of the natural world.

All reality is a fantasy, a prison created in our own heads, we are locked in the prison of our own minds. as a consequence we have to create for ourselves an understand of what reality is like on the basis of what we can observe, what we can learn, what we can see. So when we see with our eyes, what we perceive is not reality as such, our brains are afterall just clumps of tissue weighing 3.5 pounds, it’s only when interpret the electrical signals generated by our brain in our conscious mind, do we create that individual reality. That begs the question, what happens when those electrical signals are switched off?

Sensory deprivation brings you to an alternate reality where you lose track of time and your brain makes vivid hallucinations. Wothout sensory input, our world-makling machinery manufactures a reality with no connection to the world outside our body. If deprived from senses the brain scrambles for inputs from other senses. When your senses are shut off your brain makes its own version of reality.

Reality may not be a dream, but it could be a computer simulation. Imagine a time, perhaps centuries from now, when our descendants have the power to model fully functional human brains in computers. These simulated minds dcould be placed in computer simulated worlds, perhaps even recreations of the pasts. They would never know they weren’t real. What if this has already happened? How do we lknow that the present year is original, or just not some sort of rerun where some weird event in the past had been changed just to see what ramifications it would have. Believe it or not, there is a chance we are all part of a giant computer game.

Is reality real? It certainly seems real to us. But now we know that the reality we perceive is just a small slice of what really is. And perhaps, in the long run, that doesn’t matter. what matters most to us is the reality we know,. As the philosopher king Marcus Aurelius wrote 2000 years ago; “the universe is change, our life is what our thoughts make of it…”



A controversial experiment has indicated that the universe is not a hologram. Researchers from the Fermi National Accelerator Laboratory (Fermilab) have taken it upon themselves to test one of the cornerstones of string theory and quantum gravity.

The holographic principle affirms that all the matter and energy in the universe can be explained in terms of information on a “screen”. If this was true, theories would need one less dimension to explain everything, e.g. a 3D universe could be described in term of its 2D properties.

The Fermilab Holometer tested if it was possible to precisely know a 3D position to a very small scale (10-35 meters, 10 million billion times smaller than a quark). If the universe was a hologram, thus requiring one less dimension than the ones we see, we might not be able to measure all direction – forward-backwards, up-down, left-right – with the same precision. The team called this uncertainty “holographic noise.”

To test this, the scientists used an interferometer, a system of lasers and mirrors that can spot subtle differences in the light during its journey from emission to the detector. Craig Hogan, the theoretical physicist behind the experiment, believes that if the universe was a hologram then lasers sent in different directions will not find the position precisely. The holographic noise will make the laser “jiggle” and the instruments are able to detect these minimal changes. No jiggle was detected.

A scientist working on the Beam Splitter Station of Fermilab Holometer. Credit: Fermilab

The experiment is controversial because a lot of physicists don’t believe that the holographic principle would require the existence of a noise. Yanbei Chen, a theorist at the California Institute of Technology in Pasadena, stated in an article in Science that he doesn’t fully understand the theory behind the holographic noise, but he commends Craig Hogan and the Fermilab team for looking into an experimental confirmation of string theory predictions.

“At least he’s making some effort to make an experimental test,” Chen said in a statement. “I think we should do more of this, and if the string theorists complain that this is not testing what they’re doing, well, they can come up with their own tests.”

The results were presented at a talk at the Fermilab near Chicago, Illinois and they are available on ArXiv.