Facts in a complex world are observer dependent

WE humanity face a whole set of interlinked global challenges and some argue that it is too late, some advocate high time for action, while still some others think nothing much is happening. 

How come, that we look at the same world - "data" and make so different conclusions? 

Classical physics adheres to objective reality being independent of the observer or perceptual position. Theory of relativity predicts that some aspects of the facts will look different based on the perceptual position taken. However in quantum physics this is not so simple and facts itself can be paradoxical. The short answer is that in quantum physics facts are truly context dependent. That means that different observers will observe different facts if they ask different questions and/or take a different perceptual position. 

Quantum physicist Eugene Wigner created a metaphor of his "Friend" who is observing a quantum experiment with a possible Yes/No answer (for simplicity) in a sealed laboratory. Before the observation the quantum particle is in a superposition of Yes and No at the same time and Wigner's Friend does not know the answer. When he learns it, it becomes a Yes or No in his head and he can now open the door and inform Wigner about the definite result. Wigner himself is observing the laboratory, which includes his Friend from outside and does not know the answer to the experiment until his Friend opens the door and informs him about the result. According to laws of quantum physics Wigner has to conclude that the result is in a mixed state of Yes and No including a Yes and No in the head of his friend at the same time. This continues in spite of his friend having a definite answer, either a Yes or a No for some time in the meantime - hence a paradox of quantum physics. Two observers get a radically different fact based on different context they are in. This remarkable result was very recently experimentally observed. 
So the facts you observe in your mind really depend on the perceptual position you take and on the question you ask when scrutinizing a part of our world or looking at some data! 

Peter Stefanyi 
Erickson Trainer of Four Quadrant Quantum Thinking course 
March, 2019