"And what happens if...?" the author asked.
"Just don't. It's bad. Rules are rules, expect no mercy."
"Wow." The author handed over his manuscript apprehensively. "Isn't it your job to correct mistakes?"
"Nope, my job's to stop them appearing in books."
A week later, they met again.
"On page 167, you wrote, 'The bell rung'. It's 'rang'," said the editor. The author's blood ran cold as he saw the loaded gun turn towards him.