Sedimentary layers are bands of rock formed over millions of years as materials settle and compress, creating distinct strata that tell the story of Earth’s history. Each layer represents a different time period, with the oldest at the bottom and the newest at the top.

Complex problems, organizations, and systems often develop in layers over time. Like geological strata, each layer represents decisions, technologies, or structures from a particular era that remain embedded in the present. Understanding these layers helps you see why things are the way they are and identify which layers might need excavation or preservation.

Is there a problem that seems unnecessarily complex? Can you identify the different historical layers that created the current situation? Which layers are foundational and which could be removed? What new layer are you adding right now?

See also: Layer cake, Iceberg, Peeling the onion, Deep dive.

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