unsupervised learning rule so basically the idea that can we just use the idea of predicting what a future frame is going to look like to help us build better representations and I'm gonna make the argument that brains are particularly adept at prediction I'm gonna use this person who's this person Sarina yes not Venus Sarina you guys are our experts so anyway so she can she can do tennis serve at 207 km/h that's 57 meters per second that means the ball traverses the court in 400 milliseconds about now the latency from the retina to