The whole point of science is that we come up with a theory to describe what's going on, that theory makes predictions about what will happen under various circumstances, and when those predictions are fulfilled we consider the theory to be correct.
Is it possible that the theory is wrong in some detail? Of course. It is even possible that the entirety of our conception is wrong but merely happens to coincide with the reality in most circumstances, and the moment we find a given discrepancy the entire edifice of theory we've built over decades or centuries will collapse, and we'll have to come up with something else entirely to match the facts? It's happened before.
But even if what we're describing isn't really real, and we'll find out exactly how wrong we are some day, that doesn't change the fact that the theory works for the things it was designed to describe. If particle-field duality doesn't actually exist, and we'll one day replace it with something else, that doesn't change the fact that computers and GPS satellites and particle accelerators and everything else we've built on the base of that theory works. Isn't that the whole point?



					
						
					
					
					
						
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