"In our government-controlled schools we are taught that Lincoln was our greatest president because his war ended slavery and saved the Union. As usual, the other side of the story - the side that reflects poorly on the government - somehow gets lost."

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Science is a system of statements based on direct experience, and controlled by experimental verification. Verification in science is not, however, of single statements but of the entire system or a sub-system of such statements.

— Rudolf Carnap