I don't think that's a fair reflection on the history of science. I think we can say we are improving our understanding (of the universe, for instance), but every major turning point in the history of science has opened up for us far more questions than it has answered. It has allowed us to open our minds and our understanding to a whole new variety of possibilities. To paraphrase Bertrand Russell's famous comment regarding philosophy: it is not the goal to find THE answer, but to keep us moving forward.
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