Four Levels Of Science Science

Short and highly readable note on the virtues of lab experiments versus natural experiments. Lab experiments are — in principle — easy to repeat, and you can control the variables so as to get a better idea of cause and effect, as opposed to mere correlation. But it’s always open to question how well lab experiments map to the real world. That’s where natural experiments score higher. The best course is to use both (1,200 words)

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