"Some of the data-cleaning workers are atomized pieceworkers, such as those who work for Amazon's Mechanical Turk, who lack both the context in which the data w

"Some of the data-cleaning workers are atomized pieceworkers, such as those who work for Amazon's Mechanical Turk, who lack both the context in which the data was gathered and the context for how it will be used." The knowledge of the goal makes for yet another bias. "Need to know basis" in the intelligence "community" at the same time protects someone and tries to alleviate sources' biases.