I'm not sure what that has to do with my argument. Besides, banks have less and less walls, guards, and vaults, because they keep less and less cash on premise.
This is a prime example of the monetary system having been made more efficient over time.
>Besides, banks have less and less walls, guards, and vaults, because they keep less and less cash on premise.
What then guarantees the security of the financial system and of our money?