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Test patterns

At the end of the AM dial, at 3 am on PBS in 1989. Pyramid News Scheme is a back-broadcast run through multiple near-parallel (quasi-asymptotic) possibility circuits and difference engines. You get out here, in Shanghai, in 2011, say, and get in there, in St. Louis in, say, 1969. Or Berlin in 1990, or New York in 2002. The point isn’t digital yet, still analog, and so continues to arrive as more than the sum of its switches.