> If I ask my friend what his favourite song is 100 times I will get the same answer back 100 times.

Pretty sure you wont, humans vary the exact wording. They will say the same song but they wont answer the exact same way every time. Even if they say the same words two times they wont use the same tone and body language, as they don't just communicate via words and that nonverbal language is a part of what we say.

If you ask him 100 times in a row I would bet that by the second, maybe third, time he will not answer with his song but with: what the fuck is wrong with you?

Nicely circling back to LLMs not being able to learn and form memories.