Here's why:
* The Difficulty of the Task: The story highlights the overwhelming difficulty of pulling the giant turnip. One person, even the strong grandfather, cannot manage the task alone.
* Building a Chain of Help: The story emphasizes the need to bring in help from others, creating a chain of support – grandmother, granddaughter, dog, cat, and even the mouse.
* Success Through Collaboration: It's only through everyone pulling together that the turnip is finally pulled from the ground.
The story underscores that even seemingly insurmountable challenges can be overcome through the power of teamwork and the willingness to ask for and offer assistance.