Asko Parpola, reviewing the Farmer, Sproat, and Witzel thesis in 2005, stated that their arguments "can be easily controverted".[27] He cited the presence of a large number of rare signs in Chinese and emphasised that there was "little reason for sign repetition in short seal texts written in an early logo-syllabic script". Revisiting the question in a 2007 lecture,[28] Parpola took on each of the 10 main arguments of Farmer et al., presenting counterarguments for each.