Original sentence: Her 1990 book Scars of Evolution received some favorable reviews but the thesis was subject to criticism from the anthropologist John Langdon in 1997, who characterized it as an "umbrella hypothesis" with inconsistencies that were unresolved and a claim to parsimony that was false.Though much of the mainstream academic community ignored or derided the initial proposal, a small group of academics in the last 15 years have undertaken research programmes linked to the AAH
Edited sentence: Her 1990 book Scars of Evolution received some favorable reviews but the thesis was subject to scathing criticism from the anthropologist John Langdon in 1997, who characterized it as an "umbrella hypothesis" and argued that the hypothesis is not more parsimonious than simply rejecting the hypothesis.Though much of the mainstream academic community ignored or derided the initial proposal, a small group of academics in the last 15 years have conducted research at least in part inspired by AAH