these ears sits on the sides of your head and so on it will learn a general understanding of the concept of a face and you can use this understanding you can use this knowledge for any other task you really want to solve that is somewhat related what does it mean well first let's say you do exactly what did you randomly remove rectangles for images of faces and if if you have little images of faces you can remove rectangles in a variety of different ways right so you can actually end up with a large data set you train your