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<http://schema.org/thumbnailUrl>
<https://substackcdn.com/image/fetch/w_128,h_128,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d7209e9-17ed-4dfd-a410-d6178aaf4420_256x256.png>
<https://simonkjones.substack.com/p/prologue-two-hundred-years-earlier>