"“….the ‘Sanskrit-origin’ hypothesis runs into insurmountable difficulties, due to the irreversible nature of relevant linguistic changes [….but….] the likelihood of the ‘PIE-in-India’ hypothesis cannot be assessed on the basis of similar robust evidence” (HOCK 1999a:2), and that “The ‘PIE-in-India’ hypothesis is not as easily refuted as the ‘Sanskrit-origin’ hypothesis, since it is not based on ‘hard-core’ linguistic evidence, such as sound changes, which can be subjected to critical and definitive analysis. Its cogency can be assessed only in terms of circumstantial arguments, especially arguments based on plausibility and simplicity” (HOCK 1999a:12)."