I. J. Good

Irving John Good (1916–2009) was a British statistician who worked alongside Alan Turing at Bletchley Park and, in a 1965 essay on the first ultraintelligent machine, described a machine able to design ever better machines, calling the resulting runaway an intelligence explosion (Wikipedia). The corpus’s recursive-self-improvement theme tracks that idea in the wild; the newsletter invokes him by name when the loop reaches silicon, noting that Good was thinking of software and that a model has now found optimizations for its own operations on a chip an AI designed.