‘In one of the most recent cases of anomalous dating, rock paintings found in the South African bush in 1991 were analysed by Oxford University’s radio carbon accelerator unit who dated them as being around 1,200 years old. This finding was significant because it meant the paintings would have been the first bushman painting found in open country. However, publicity of the find attracted the attention of Mrs Joan Ahrens, a Capetown resident, who recognised the paintings as being produced by her at art classes and later stolen from her garden by vandals. The significance of incidents such as this is that mistakes can be uncovered only in those rare cases where chance grants us some external methods of checking the dating technique.’
Richard Milton, The Facts of Life—Shattering the Myth of Darwinism, Fourth Estate, London, 1992, pp. 33–34.