> The human brain is mutable

Only in the sense of doing circuit-bending with a sledge hammer.

> the human "soul" is a concept thats not proven yet and likely isn't real.

There are different meanings of "soul". I obviously wasn't talking about the "immortal soul" from mainstream religions, with all the associated "afterlife" game mechanics. I was talking about "sense of self", "personality", "true character" - whatever you call this stable and slowly evolving internal state a person has.

But sure, if you want to be pedantic - "SOUL.md" isn't actually the soul of an LLM agent either. It's more like the equivalent of me writing down some "rules to live by" on paper, and then trying to live by them. That's not a soul, merely a prompt - except I still envy the AI agents, because I myself have prompt adherence worse than Haiku 3 on drugs.