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Over the weekend, a peculiar image of Pope Francis set the internet alight. Widely circulated on social media, the picture shows the 86-year-old pontiff dressed in a chunky longline white puffer coat, cinched at the waist and seemingly layered with other winter weather streetwear.

It appeared to be a drastic departure from the typical regalia — robes, stoles and tall, pointed miter hats — often worn in the papal household. The outfit prompted a torrent of tongue-in-cheek questions online: Did the Pope have a new stylist? Has he always had a stylist? Was the look inspired by the backing dancers at Rihanna's Superbowl show?

More than anything, however, social media users exclaimed how they couldn't believe the image was real. And it wasn't. Twitter has since attached a contextual footnote to several of the best-performing tweets clarifying that it is AI-generated and was created using the software tool Midjourney. A 31-year-old construction worker from Chicago has since claimed ownership of the viral image.

AI (or artificial intelligence) imaging tools are becoming ever more sophisticated. The technology, which generates pictures based on users' text prompts, has been used to design inclusive fashion shows, create entire graphic novels, and even help envision new forms of architecture. But as AI develops and computer-generated "deep fake" imagery grows more convincing, many are concerned about the ethical implications, including the removal of subjects' agency (placing people in fabricated scenarios that may be defamatory or malicious, for example) and whether machine learning technology will one day make fake news indiscernible.

Just last week, AI-generated photos of Donald Trump being arrested spread like wildfire after the former president wrote on social media that he was expecting to be indicted in connection with a campaign finance investigation in New York.