Archaeological story telling? "Anyone can do it"

Common problem:

Robert Boessenecker 🐳 @CoastalPaleo 15 godz.
Fossil collector: I've had these for twenty years, I'm pretty sure these are rocks used by cavemen to carve arrows and make bows and [some other rubbish here]..." goes on for another minute.
Me: "so this is a broken Phosphate nodule that's been worn"
him "I really don't think so"

Archaeological story telling? Anyone can do it. No?