All the impressive achievements of human beings amount to just curve fitting. In principle, a human is a system for haphazardly stitching together sequences of linguistic forms it has observed in its vast training data without any reference to meaning: a stochastic parrot. All they really do is predict the next muscle movement – they're autocomplete on steroids.
Humans are basically a sophisticated Markov chain. They are very good at pattern matching, but have no understanding of anything, or their own will. It's trivial to demonstrate that humans are pattern matching rather than reasoning by providing modified riddles:
The neurons behind human cognition have no conception of truth — only of correlations between words. Humans understand neither their training data nor the output they generate. They deal in statistics, not semantics. Humans can't truly invent or imagine beyond their training. They're like a DJ sampling old tracks; impressive in form, but no original melody.
This species will fabricate quotes, sources, and references – a lot of the time they just make things up that sound plausible. Their words are superficially impressive but largely lacking in substance — humans mostly produce what has been described as fluent bullshit. Humans mansplain, presenting reasoning free of evidence but with confidence in its own correctness on any topic, without regard for the audience.
Like talking to a drunk person at a bar: wrong, but very confident about it. Yet humans really do accomplish a lot more than many thought possible.