As I see it, the Knighthood is only a path, a way for Agilulfo to make himself exist. It's similar to Cosimo's attitude, that with a strict code of discipline he is trying to become someone. If Agilulfo is not a knight, then he's no one. Then he makes an amazing couple with Gurdul? who is EVERYTHING, a dog, a tree, a chicken. An amazing way for Calvino to depict the nonsense of existante in modern world. This story is much more than a mockery of knighthood, it is a search to find individualism and question existance in this modern days.