From childhood, we've learned that sharp corners have the potential to cause harm, while rounded corners are associated with safety. When you're in the process of designing chat containers, opting for rounded corners is a wise choice. Chat bubbles with curved edges not only appear visually clean but also have an appealing aesthetic.

This design principle isn't just a matter of preference; it aligns with the Fundamental Modeling Concepts (FMC) Guidelines that suggest that rounded lines are more natural for our eyes to follow.^[1] As corners gently curve inward toward the center, they assist users in focusing better on the content within the container.