R. A. Blank

“Titivillus was a tricky little bastard. Despite the scribe’s best intentions, the work itself was repetitive and boring. The mind would wander and mistakes would be made. It was the duty of Titivillus to fill his sack a thousand times each day with manuscript errors. These were hauled to Satan, where they would be recorded in The Book of Errors and used against the scribe on Judgment Day. Thus, the work of copying came with a risk to the scribe: while properly transcribed words were positive marks, incorrectly transcribed words were negative marks.”
― Andrew Davidson, The Gargoyle