What does the protagonist learn from the boy's golf course?

One day, the narrator and his friend, Sergio, decided to go over the hill and spend their few days. His mother was not against and even helped them to gather necessary things and food. They two started and soon found a perfect place to have a meal. It was green, very bright and the narrator compared it to the Oz country, so bright the green grass was. He and Sergio had a meal there and considered the place paradise. But there appeared two men with strange sticks and shouted on them. Later they found out that those men were golfers and the place was a golf field.

The symbolism of the golf course is partially asserted outright when the narrative describes it as heaven. On a larger scale, the golf course is a metaphor for the Garden of Eden where the boys enjoy a brief moment of utter perfection before being banished with the appearance of the golfers slithering from the high grass like serpents. Thus cast out of paradise, the narrator sardonically “We got golf in exchange.” Just as Adam and Eve exchanged perfection for mortality, the boys are forced to give up paradise in exchange for learning about the existence of golf. Golf is thus a symbol of the fall from grace.