Yeah, absolutely. Even with unlimited food at his disposal, it still took 5-6 months to do this. It gets easier with more humans, because some of them can specialize in exchange for the energy gathered by other specialists (hunters, farmers, etc.). You can have a guy specialize in nothing but cutting wood, or in nothing but making tiles.<p>Get enough humans together and you develop enough spare capacity to dedicate a few percent of your population to mine for ore and now you get metals, which give you even more spare capacity over short-lived stone and wood tools and the technological ball rolls on and on picking up more and more speed.