Everything is "quantum state". You do a database fetch and in the time that the result travels over the wire to the FE another node could have made a mutation.

Everything is "quantum state". You do a database fetch and in the time that the result travels over the wire to the FE another node could have made a mutation. The nice thing is that adapters to sql engines often have exactly the sort of protections you want baked in, e.g. "check to make sure the updated at timestamps match before committing an update"