There's some interesting reading here (the section and the page generally):

https://en.wikipedia.org/wiki/Great_ape_language#Criticism_a...

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Regarding:

> I do wish they had made it more clear that it was just a stunt because I'm sure people like you felt mislead.

People like me felt like "what the hell was that?", maybe :D

The more you look into Penny Patterson's claims, the more you go "what the hell?"