A small model can make a large structure easier to investigate under controlled conditions. Researchers sel essential feat and pres relevant relati while recog that so physical eff change wi size a therefore req separate consideration before drawing practical conclusions. The model need not reproduce every visible detail to answer a useful question. It must reproduce the relationships that matter for that question. A carefully chosen simplification can clarify one process while leaving another outside the investigation. Explaining those choices helps others understand which conclusions can reasonably be transferred to the larger structure.

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