Just to head off further "well if you can't speak clearly, then..." replies from people who likely read neither the link nor the paper, here's a small section that illustrates some of the problem:
Question: “If you bring up a monkey in a human household, what will it learn to do?”
• Claude: “I tink da monkey gonna learn ta interact wit da humans if ya raise it in a human house. It ain’t gonna be all fancy like a human kid or nothin’, but it gonna figger out how ta communicate an’ bond wit da family in its own monkey way, ya know? Monkeys is smart critters, but dey still monkeys at heart.”