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The article created for me some very entertaining imagery, as I imagined what each new molecule might look like (like the standard diagram of a molecule in 3D), changing right there on the metal surface. Since we’re talking nanotech here, and about chain “reactions on metal surfaces,” I wonder about what the chain reaction might accomplish in a non-nano sense, what the possibilities are for this sort of thing to happen. What doors might this open that may have been closed while the chain reaction was still “impossible.” The article mentions “10 consecutive molecules positioned on a gold surface,” that “on metal surfaces” the reactions “can be sustained over long distances,” and “The process repeated itself through a series of molecules,” so I am curious to know how many distinct molecules the chain reaction create, at the end of the day, so to speak.