An anonymous reader writes with a link to The Stack's look at study that examines the human capacity to detect (or to overlook) manipulation in images. About 400 volunteers looked at images which had been digitally altered by erasing elements, by replicating parts the image, or by pasting in elements from other images. Less than 58 percent of the alterations were detected, even though the volunteers knew that's what they were to look for. The article says "While its conclusion – that we are not very good at identifying doctored photos – is predictable, it's the type of 'fakes' that deceive us which are most interesting." Spoiler: Erasure is much harder to spot than image splicing.
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