There are many different types of stones, and techniques for shaping them became progressively more sophisticated over time. With instruction, it would probabl

There are many different types of stones, and techniques for shaping them became progressively more sophisticated over time. With instruction, it would probably take you less than an hour to learn how to make the types of simple chopping stones that human ancestors used 1 million years ago. However, it takes much more considerable time and skill to learn how to make the types of stone tools humans were using 100k years ago. You get the sense that each group of ancient humans probably had an old expert toolmaker who passed on the trade to the next generation.