#66 Ragnarök

At low tide, my sons and I like to build a sand city in the surf. Over the summers, we’ve become quite good at building systems that can withstand the rising tide. Dikes, levees, and canals keep the water away from a central hill, typically decorated with shells and feathers, and other treasures found on the beach. Each wave will weaken the system, but through hard work, we restore it before the next wave hits.

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