The emergence of cheap, skilled labor in India and other countries during the 1990s changed that, Banerjee says, because these workers could collect the data inexpensively.

• 巴纳吉说，1990年代，印度及其他地方开始出现较低廉且能力强的劳工，使上述情况有了转变，因为这些工作者能以较低的酬劳蒐集资讯。