Jason bought a really old rock—and it sparked a fascination with the Neolithic era. In this episode, he’s joined by Dr. John Shea, archaeologist and stone tool expert, for a conversation about the original problem-solvers. They explore how communication became humanity’s superpower, why the stone ax was the first handheld all-purpose tool (and how it’s surprisingly similar to a smartphone), and the ancient problem that shelves were designed to solve.

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