Traditional operating systems are extremely abstracted as well. To book a flight online right now, you click a series of coloured rectangles on your screen with

Traditional operating systems are extremely abstracted as well. To book a flight online right now, you click a series of coloured rectangles on your screen with a cursor that you control by dragging a mouse about on your desk, or rubbing your finger on a piece of glass. Compare this to what would happen in real life, which is you talked to a person and they would write your name on a flight list.