Advertising&#x2F;Marketing is unique in that it doesn&#x27;t produce any byproducts. It&#x27;s conceivable, and often the case, that software is developed because it&#x27;s something useful and fun to do. The same is true for food, rockets, cars, novels, etc. Advertising&#x2F;Marketing though doesn&#x27;t exist for any other reason than to promote products and facilitate flow of money.