Bubble was playing with building blocks at home. After seeing his creation, he suddenly thought of the building in front of his estate. He looked at the construction site across the street with great excitement, admiring how the workers there could build a huge skyscraper. Excitedly, he tried to transform his original building blocks into the shape of a skyscraper, wanting to show his creation to the workers across the street. However, he unexpectedly noticed a worker walking towards the edge of the building. Bubble felt puzzled. Seeing the worker standing still, Bubble seemed to realize something and hurriedly rushed towards the entrance of the construction site.

What is the worker doing on the edge? What are their choices for the next move? Will their future be altered to a greater or lesser extent because of the next move?