You had literally -zero- input in what your brain gave you as an answer. It just gave you something, you can make up whatever story you want to tell yourself, "it's my favourite movie", "I saw it last week", whatever you want. It doesn't change the fact that the words on your screen triggered some neural pathway in your brain that is totally out of your control and landed on "Titanic".
:)
We are also able to apply lived experience to our reasoning. That is why we can accurately answer a question about whether to drive or walk to the car wash. Or how we could immediately see how many "r"s are in "strawberry".
LLMs, being "glorified autocomplete" don't have a real way to separate truth from lies, or critically evaluate sources of information. Humans can absorb information in various ways, such as our "classic five senses" which inform our daily lives and motions, or by absorbing information via reading, hearing, seeing, etc., or by inferring and reasoning and being "guided by the Spirit" in a more metaphysical way where LLMs would fail.
You aren't aware of how you come up with the words you are saying, you just start talking and the next word somehow falls out of your mouth. Maybe you think before you start talking, but where do the thoughts come from? They just appear to you in your head. We are just as much a predictive machine as LLMs, the human brain is just fuzzier.