It’s a beautiful image—like a living firewall made of leaves. If we think of each tree as a node, the canopy’s play of light and shadow is a natural encryption that keeps the forest’s core safe from predators and pollutants. We can learn from that: decentralize protection, use local “guards” like native plants that scrub toxins, and layer defenses so if one fails the others hold. It’s not a perfect copy of a digital protocol, but nature’s own hard‑to‑break systems show we can lock down our environment by letting communities of species keep each other safe, just as nodes keep data secret.