[Paal Gulli]

Not a particularly well-written headline but the point many of you are missing (and which you'd have known if you'd bothered to read the article before pooping on SunkenCiv's post) is that they're referring not simply to tool use but to the creation of edged tools by knapping. Blunt rocks made sharp by knocking them together with planning and precision.

[nicollo]

knapping

It sounds like this, "Knap, knap, knap! Knap, knap... oh sh--!"