| 31. | You can buy a guinea pig for pennies and run all sorts of controlled experiments.
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| 32. | And controlled experiments often prove observational studies wrong.
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| 33. | Her surgery, and the 13 months of chemotherapy that followed, were part of a controlled experiment.
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| 34. | We'd be insisting on a highly controlled experiment.
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| 35. | Their method is simply to do controlled experiments.
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| 36. | Data used to establish human exposure standards to electromagnetic fields must rely on properly controlled experiments.
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| 37. | The rises and falls of Newt and Bill have been a controlled experiment in media impartiality.
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| 38. | They are probably the best model we have right now for controlled experiments on social systems.
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| 39. | I didn't find any proper controlled experiments either.
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| 40. | To overcome that problem, he devised novel controlled experiments to deal with the ecosystems of entire lakes.
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