I read somewhere that the Aborigines used to shimmy up the telegraph poles to steal the glass insulators. Naturally this was always done in the middle of nowhere and it was a real hassle for the telegraph company to sent guys out to replace them, so the linemen got in the habit of always leaving a few extra insulators on the ground under the poles.
Australian knapping was very different than American knapping, heavily relying on flake and blade technologies, while in the Americas it was mostly bifacial knapping. The Kimberly point is a biface in the sense that it is flaked on both sides, but is not created by bifacial reduction. It starts life a s a flake which is then pressure flaked to create the desired edge angles. The point shown above at 11 o'clock is a good example of how they start out. With enough future resharpenings, the pressure flakes more or less cover both faces and the points look like what we think of as a traditional biface.
Keith
