I have learned to believe very little of any report from the so called experts, they present to speak in the name of research. None of those speaking had anything to do with the research but all of them will have a book and speeches to give that will make them a lot of money because it sells.
To even concider such as this I would want the report from 13 years of field work by those involved. I find most of the research is usually taken out of context and the people that can profit quickly skim the top.
I had great interest in PUMA PUNKU located in Bolivia after hearing the liars and their story until I located the reports of those that worked there and was I disappointed. What a bunch of lies put out to the public.