Why can symmetry be added to structural stability?

Symmetry enhances structural stability by distributing loads evenly across a structure, reducing the likelihood of stress concentrations that can lead to failure. A symmetrical design often allows for balanced forces and moments, which can improve overall performance and resilience against external loads, such as wind or seismic activity. Additionally, symmetrical structures tend to be more aesthetically pleasing, which can contribute to their acceptance and longevity in the built environment.