Eileen Guo: It's essentially very low paid workers that are being asked to label images to teach artificial intelligence how to recognize what it is that they're seeing. And so the fact that these images were shared on the internet, was just incredibly surprising, given how incredibly surprising given how sensitive they were. Jennifer: Labeling these images with relevant tags is called data annotation. The process makes it easier for computers to understand and interpret the data in the form of images, text, audio, or video. And it's used in everything from flagging inappropriate content on social media to helping robot vacuums recognize what's around them.