The world is a busy place
We live in a world of advertising. It is a world of our making, of course. We don't like to pay the full price of things, so we allow other people to pay part of that price in exchange for letting them pass a message to us.
However, ads also do other things. One thing they do is to take a product and to put it next to lots of other things that we already feel positively about. The most powerful effect of advertising is just to create a good feeling about a product by surrounding it with other things that you like.
We manage - technology, production, strategy and planning, creativity, management, measurement and even contracts.