Groen writes: "As far as I can understand it, decortification of
quartzite pebbles has been commonly applied in the tool
technology of controlled flaking in the Belgian Kempen area. In
fact, instead of real "flaking" this technique is based on
slightly, carefully, trimming the pebble's surface, to remove
both the cortex as well as parts of the inner structures, to get
the desired shape of the pebble. I've noticed this on several
unifacial and bifacial flaked pebble cores. Most usual this has
been done to achieve a chopping tool, but trimmed edges occur
also in unifaces.... So it is clear the making of such a shape,
like the profile of a human face with this typical
'hairdressing' is a deliberate process." Richard Wilson, a
figure stone scholar from the U.K. and publisher of
http//palaeoart.com, writes: "He (Patterson, 1983) places value
on recognising the patterns that characterise artefactuality
including frequency: Even if nature can produce lithic objects
resembling simple man-made items, nature is not lik