On the page does the German Shepherd Dog understand English, the book corrects my understanding of Jenny Goodall. The author criticizes: there is a woman in the United States who claims to be a scientist who claims to be able to talk to Gigi, the mother orangutan. She said Gigi told her interesting stories about death and heaven in orangutan Esperanto, and she answered in dumb language. Unfortunately, other researchers who imitated her found nothing, indicating that this so-called communication is actually based on fantasy. 
the author's original knowledge of Jenny Goodall?
Jenny Goodall can talk to Gigi, the mother orangutan.