] here ▁is ▁bias ▁in ▁the ▁underlying ▁data ▁that ▁leads ▁to ▁an ▁err one ous ▁conclusion , ▁and ▁strong ▁evidence ▁that ▁is ▁ignored ▁which ▁still ▁strongly ▁supports ▁the ▁K urg an ▁hypothesis ." ▁According ▁to ▁David ▁Anthony , ▁" this ▁type ▁of ▁model ▁doesn ' t ▁match ▁the ▁complex ▁lingu istic ▁and ▁arch ae ological ▁evidence ," ▁stating ▁that ▁"[ t ] he ▁study ▁is ▁an ▁example ▁of ▁retro f itting ▁evidence ▁to ▁a ▁model , ▁but ▁the ▁results ▁of ▁such ▁a ▁model ▁are ▁only ▁as ▁useful ▁as ▁the ▁underlying ▁data ▁and ▁assumptions ." ▁ ▁L ingu ist ▁Paul ▁H eg gart y ▁from ▁the ▁Max ▁Plan ck ▁Institute ▁wrote ▁in ▁ 2 0 1 4 : ▁▁ ▁Ch ang ▁et ▁al . ▁( 2 0 1 5 ) ▁also ▁conducted ▁a ▁lex ic ost at ist ical ▁( and ▁some ▁gl otto chron ological ) ▁study , ▁producing ▁results ▁different ▁from ▁the ▁results ▁produced ▁by ▁Gray ▁and ▁At kin son . ▁This ▁study ▁instead ▁supports ▁the ▁K urg an ▁hypothesis . ▁ ▁D ating ▁P ig got ▁( 1 9 8 3 ) ▁states ▁that ▁P IE ▁contains ▁words ▁for ▁techn ologies ▁that ▁make ▁their ▁first ▁appearance ▁in ▁the ▁arch ae ological ▁record ▁in ▁the ▁Late ▁Ne ol ith ic , ▁in ▁some ▁cases ▁border ing ▁on ▁the ▁early ▁Bron ze ▁Age , ▁some ▁belonging ▁to ▁the ▁oldest ▁layers ▁of ▁P IE . ▁The ▁lex icon ▁includes ▁words ▁rel ating ▁to ▁agricult ure ▁( dated ▁to ▁ 7 5 0 0 ▁BC