system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it so hard to cure rabies once you get symptoms?

I've never understood why having symptoms means your death.
gpt
Rabbies attacks your central nervous system, so if you're showing symptoms it's already too late as the central nervous system controls many vitally critical functions.

Think of it as trying to put out a fire after it has already burned the building down.  At that point if even you put the fire out there's nothing left to salvage.