In working on the Common Draft audit-rights clause, I found a citation for a saying I learned in the nuclear Navy: You get what you inspect, not what you expect.
The source of the citation is certainly authoritative: Admiral Jonathan Greenert, the current Chief of Naval Operations — that is, the top officer in the U.S. Navy* — who came up as a nuclear submariner.
* Unless the Chairman of the Joint Chiefs of Staff is also a Navy officer