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One good site
MDN
Nelson Minar
Blog licensed under a Creative Commons License
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My friend Adam went to Peru; he told me about
amazing Inca stonework for monumental architecture. Earthquakes aren't friendly
to large stone buildings; the Inca solution was to build with
irregularly shaped stones precisely fit together so there were no
simple shear planes. All cut without iron or steel. Read more in this
fine article.
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