By typing in a prompt such as “realistic purple unicorn digitally rendered” the program (simplistically put) cranks through billions of images it gathers from the internet “searching” for patterns of correlation among words and images, then diffuses or disassembles images into bits to then re-assemble those bits into a “new” image. There are now three graphic generating applications competing for world dominance-- DALL-EE 2, Midjourney and Stable Diffusion. Stable Diffusion is, in Silicon Valley terminology, a “unicorn” -- meaning a start-up worth $1 billion.