No. You're wrong. chatGPT only knows of text. It derives incomplete understanding of the world via text. Therefore it understands some things and it understands others. It is clear chatGPT doesn't perceive things in the same way we do and it is clear the structure of its mind is different then ours so it clearly won't understand everything in the same way you understand it.
Why are you so stuck on this stupid concept? chatGPT doesn't understand everything. We know this. Humans don't understand everything we also know this. Answering a couple stupid questions wrong whether your human or chatGPT doesn't indicate that the human or chatGPT doesn't understand everything at all.
>You haven't eliminated the possibility of autopredict, merely ceased to consider it.
What in the hell is auto predict? Neural networks by definition are suppose to generate unmapped output if this is what you mean. 99 percent of output from neural networks is by definition unique from the training data.
>There is more evidence for the sentience, self awareness, and understanding of concepts of Harry Potter than of chatGPT.
This is a bad analogy. I'm not claiming sentience. My claim is that it understands you.