“Temporal coherence has come from the fact that we’re not generating frame after frame after frame [to create a video,]” Farid explains. Rather than generating videos one still image at a time—Will Smith eating spaghetti is Eadweard Muybridge’s horse for the internet age—these newer programs can generate a short video clip all at once. There are limits on how long those clips can be—Farid says about 10 to 15 seconds—which is why, for right now, your tattoos probably would get messed up in any longer generated video, which is just a bunch of short clips back to back.