>

Its hard to say, but probably not the case with apes
They teach their young things all the time, and new behaviors are recorded to be taught when exposed to a group (liking washing fruits etc) 
The leap to suggesting they may know that other apes know things they don't isn't too far 
I think the issue is moreso their inability to abstractly communicate through language 
The amount of info you can pass on is severely limited if you can't talk
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Psychology says there’s two types of intelligence: (1) crystallised - our knowledge we have gained, and (2) fluid - our ability to learn and understand new and various information >

It’s so funny to me when peoples shower thoughts are just known scientific theories >

Which highlights the importance of sharing knowledge. It's one of the things that separates (most of) us from apes. They don't understand another ape can know something they don't. 
I'm not smart, it's just my crystalized knowledge leaking.