The Ghost in the Copier

Mariana ran the front office of a small law firm. Her workhorse was a Canon iR2016, a bulky, beige multifunction printer that had printed thousands of contracts. One Tuesday, it developed a strange tick: it would copy a document, but the output had a random vertical black line running through every page. Worse, when scanning to email, the file names came out as gibberish symbols like @#$.tmp .

He agreed.

That logic error was the .