DeepMind researcher @iamtrask argues AI may be heading for its mainframe-to-PC moment, with networks of narrow models replacing one giant model at the center: "There's a growing body of folks who disagree with the mainstream belief on where AI is headed. One set of ideas says the scaling laws imply a smaller number of larger and larger models at the frontier. There is both a theory and some empirical observations that are really threatening that belief." "We're seeing this up pressure on…