Chain of evidence
Just passed on to a relative an article on a local election, where a "thumb drive" was misplaced and those votes simply not counted. Found three weeks later, the elections people carefully checked it over, totaled the for/against votes from it per election issue/race, and cheerfully said "Oh, none of the actual election results would have been changed! So no harm done (and no we won't be changing the election totals or noting the error permanently.)"
This less than a year after my vote in a local election tied one race, 521 votes each, leading to a runoff election.
Why the hell is "double-entry bookkeeping" described as a critical foundation for business, but election paper trails are "meh"?