Stone tools predate this carpentry by 2.9 million years, so people had been using stone tools for six times as long as of that time, as the time that separates

Stone tools predate this carpentry by 2.9 million years, so people had been using stone tools for six times as long as of that time, as the time that separates them and us: https://en.wikipedia.org/wiki/Stone_tool#Pre-Mode_I https://en.wikipedia.org/wiki/Stone_tool#Pre-Mode_I