The editorial reviews here cover just about everything else I would say about this book, so I won't repeat their comments, just direct the reader to them.

...One factual error this book makes repeatedly that I would like to correct: although they speak the same language as the Indians of the Andean highlands, and although they expanded northward into Cofan territory relatively recently, the Amazonian Quichua are NOT migrants from the highlands and NOT newcomers to the rainforest. They are true Amazonian people, distinct syncretic cultures created from the remnants of various destroyed Amazonian tribes who blended together and adopted their lingua franca (Quichua) as their first language. Though the Amazonian Quichua have been influenced (=weakened) by missionaries for much longer than the Cofan, their roots in the rainforest are every bit as deep.