But even in microeconomics, where it is sometimes possible to generate precise empirical estimates using randomization techniques, the results must be extrapolated in order to be applied in other settings. New economic evidence serves at best to nudge the views – a little here, a little there – of those inclined to be open-minded.
即使在有时能够借助随机法得出准确经验估算的微观经济领域，结果也必须进行外推才能适用于其他环境。新经济证据最多也就能对思想相对开放者的观点起到些微调作用。