Earlier quoted context omitted.
I wonder how much the source content is the cause of hallucinations rather than anything inherent to LLMs. I mean if someone posts a question on an internet forum that I don't know the answer to, I'm certainly not going to post "I don't know" since that wouldn't be useful. In fact, in general, in any non one-on-one conversation the answer "I don't know" is not useful because if you don't know in a group, your silence…
Reminds me of a joke Three logicians walk into a bar. The bartender says "what'll it be, three beers?" The first logician says "I don't know". The second logician says "I don't know". The third logician says "Yes".
Logically speaking, the second bar tender could have thought to himself "no I don't want any beer, but one of these two other guys may want to double fist" and so there is really no way for the third logician to answer in the affirmative.