Notes · Sketch
The Silk Road as portal vein: a thought experiment
What if the most important trade route in pre-modern history is shaped that way because something deeper insists on it?
This is a sketch, not a hypothesis. A sketch is what I write when I'm not sure I believe the thing I'm about to say, but I want to write it down before I talk myself out of it.
The portal vein is the vessel that collects nutrient-rich blood from the gut — from the entire intestinal system — and delivers it to the liver for processing before it enters the general circulation. It is, in a real sense, the body's trade route: the channel through which the products of digestion are gathered, concentrated, and redistributed.
The Silk Road was, among other things, a nutrient pipeline. It gathered the productive output of a vast agricultural and manufacturing hinterland — silk, spices, metals, grain — and moved it toward a processing center before distribution into the larger network.
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