You never went through an audit, did you?
Sounds like the pitch Fujitsu made to the Post Office for Horizon. That worked out so well!
You cannot eliminate the need for auditors - the need is for someone to go through the system and make sure that no one is cooking the books.
Hence, an independent third party does the audit.
This is not true. Auditing is half assurance and half insurance. It has nothing to do with the actual results of a bunch of rules and checks.
You never went through an audit, did you?