The phenomenon known in biology as convergent evolution describes how distant species can develop similar structures when confronted with comparable challenges. Dolphins and ichthyosaurs, for example, are separated by millions of years of evolutionary history, yet both evolved nearly identical hydrodynamic bodies. Architecture has its own parallels: A-frame structures emerged independently in both the European Alps and Japan, even without direct cultural exchange, as spontaneous responses to snow, wind, and material scarcity.