Charlie casually picked a few sticks from the nearby bushes and squatted down to start simulating the construction. He began, "First, we need to understand the purpose of building a shelter, which is to provide us with some protection. It keeps us from being directly exposed to the sight of wild animals and shields us from the wind and rain so we can stay dry and warm. Finally, we also need to consider comfort, allowing us to get better sleep inside." He continued, "With these points in mind, we have a plan for construction. To avoid exposure and shield from the elements, the shelter needs a certain sturdiness, and the easiest and most robust shape to create is a triangle. Triangles are stable. That is common knowledge. So, we'll build it like this..." After finishing his explanation, C

