At medical schools, pharma companies, and even at the FDA, biostatisticians and clinical researchers recognize that retrospective data when treated with appropriate bias-controlling statistical methods, can in fact be reliable, particularly as it points to direction of influence and the general magnitude of effect.

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As an agriculture senior, Matsu-ura is studying advanced farm methods - controlling tractors via satellite, for instance.

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Perhaps the most important indication of whether an activity is being performed in a businesslike manner is whether the taxpayer implements methods for controlling losses, including efforts to reduce expenses and generate income.

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Monsanto's limited safety research, excessive claims, and business methods which signal the possibility of controlling large parts of world food production through an unproven technology, have been exposed to public scrutiny by a wide range of well-informed critics.

ECONOMIST: Letters