Evolution operates through three simple mechanisms: random variation creates diversity, selection pressure favors certain traits, and successful adaptations pass to offspring. This isn't just biology—it's the fundamental algorithm that shapes anything that adapts over time. Competition is the first law of biology, and selection is constant.

Nothing evolves in isolation. When one element in an ecosystem changes, everything in its niche must adapt in response—cheetahs become faster to catch gazelles, gazelles become faster to escape cheetahs. This co-evolutionary pressure creates dynamic equilibrium where competing forces push each other to constantly improve.