Reading the stones: how early people chose their tools

Not every stone makes a good tool. Early people learned to spot the ones that would flake into a sharp edge — flint, chert, obsidian — and to leave the rest. Choosing and shaping stone was a skill passed from parent to child, exactly as Dad shows Kavi.

It is a wonderful, hands-on doorway into the past: the very first technology was learning which rock to pick up.