“…Langdon's claim that it does not, gives the impression that the majority of the subject matter has been dealt with by critics previously, but this is not the case. Langdon's last publication addressing the AH was in 1997, but to our knowledge there has not been any response, apart from an occasional supportive mentioning (e.g., Wrangham, 2005), to the aquarboreal model (Verhaegen et al, 2002), the pachyostosis papers (e.g., , the kidney research (e.g., Williams, 2006Williams, , 2011, the wading hypothesis (e.g., Kuliukas, 2011), our diving abilities (Schagatay, 2011), our underwater vision abilities (Gislén and Schagatay, 2011), and the very intriguing contribution in the eBook (not mentioned as original by Langdon) regarding our colour vision (Chan, 2011). Furthermore, we consider the rebuttal of Kuliukas (2011) -eBook chapter 15 -to Langdon's 1997 paper as original work, as it replies in specific detail to every previous claim by Langdon.…”