There is a philosophy that says that if something is unobservable -- unobservable in principle -- it is not part of science. If there is no way to falsify or confirm a hypothesis, it belongs to the realm of metaphysical speculation, together with astrology and spiritualism. By that standard, most of the universe has no scientific reality -- it's just a figment of our imaginations. Leonard Susskind
About This Quote

The quotation is attributed to Isaac Asimov. The point is that some people do not believe in science. They believe that the universe is just nothingness and that the only thing that has anything to do with us is our imagination. They do not think that there are things that can be observed, like planets or stars or people. Science, according to these people, is only something we invent on the basis of our observations, which are not even real in themselves, but are only our projections on what we see.

Source: The Black Hole War: My Battle With Stephen Hawking To Make The World Safe For Quantum Mechanics

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  2. At some point we have to give up and say that's just the way it is. Or, not give up and push on.
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