I, too, wonder how they reached the conclusion that these flint samples were specifically collected and not just recycled. I’m not fully convinced their finding

I, too, wonder how they reached the conclusion that these flint samples were specifically collected and not just recycled. I’m not fully convinced their findings support the collection claim, but I also don’t consider it far-fetched that flint and other tools were passed down through generations and collected or honored by descendants. What I do find interesting is that in your quoted passage note the second use was seemingly lighter duty. Maybe they had an understanding of wear cycles for flint and adjusted use accordingly?