Most people think Photoshop is a magical tool that can change reality, but it does require a skilled artist for decent results. Using neural networks, however, University of Edinburgh researcher Andrew Brock has built an uncanny image editing app that can transform someone's entire hairstyle with just the stroke of a brush. To use the Neural Photo Editor, you select the "contextual paintbrush," choose a color and start mousing the part you want to change. The system can recognize if you're on the model's hair, for instance, and intelligently fill in the area, changing the color to match your brush. In another example, the user paints over the subject's mouth with a white brush to make their smile bigger.