I doubt you ever thought of students this way before.
Terms like raw material, assembly line worker, quality control inspector, product, and customer mean something to most of us. Just to be sure we are on a level playing field, I will put these in the context of a clothing manufacturer. Raw materials include the fabric used to make pants. Pieces of fabric are cut to shape and sewn together by an assembly line worker known as a seamstress to make the product, a pair of pants. A quality control inspector checks to make sure the product meets certain standards, for example the quantity of legs. Assuring there are two legs, the inspector puts a little slip of paper in the pocket that reads, “Inspected by No, 7.” Now, if there are fewer than two legs or there are no pockets, I am not sure what the inspector does. But, somehow, the pants make it to the store where I, the customer, shop. Unfortunately, I don’t realize the problem until I get them home and have no place to put my left leg. (Don’t you just hate it when that happens?)