It's courteous to learn how to behave around others.
Donald is invited to a fancy dinner where etiquette is very important, but he doesn't know the etiquette.
Donald wants to go to the dinner.
Donald reads up on proper dining etiquette and practices it, then goes to the dinner.
Donald decides that they'll love him for who he is and goes without any etiquette training.
Donald impresses the guests and makes some powerful connections.
The people at the dinner are offended by Donald's lack of etiquette.