/r/stupidquestions
How did the Incas go from having the most advanced postal network in their era to their descendants having a disorganized and disordered network?
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I was taught in school to drink 8 glasses of water a day (b.1989, USA). Has this always been optimal for homo sapiens or is the modern diet too salt heavy, etc? I just cant imagine lapping up 8 glasses with our tongue like a cat (in our early days).
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