For Norton D. Kinghorn, Charlotte's web also acts as a signifier of change. The change Kinghorn refers to is that of both the human world and the farm/barn world. For both of these worlds change is something that cannot be avoided. Along with the changing of the seasons throughout the novel, the characters also go through their own changes. Jordan Anne Deveraux also explains that Wilbur and Fern each go through their changes to transition from childhood closer to adulthood throughout the novel. This is evidenced by Wilbur accepting death and Fern giving up her dolls. Wilbur grows throughout the novel, allowing him to become the caretaker of Charlotte's children just as she was a caretaker for him, as is explained by scholar Sue Misheff. But rather than accept the changes that are forced upon them, according to Sophie Mills, the characters aim to go beyond the limits of change. In a different way, Wilbur goes through a change when he switches locations. Amy Ratelle explains that when he moves from Fern's house to Homer Zuckerman's farm, Wilbur goes from being a loved pet to a farm animal.