"I've had a report to say that four invoices were paid late."
"Oh. Let's check them with Noreen to see what happened. If it was a long part-order there might have been a problem with getting it reconciled with the order."
"Which four invoices are they?" asks Noreen.
"I don't know. Does it matter?" asks Jack Harry.
"It does if you want to know what happened to them."
"Can't you tell from the system?"
"Can't you tell from the report?"
"These are the invoice numbers," says Jack Harry, passing over a slip of paper.
"Ah yes," says Noreen. "Let's have a look... Ah yes. They were just small invoices, the biggest one just had ten titles. We got them processed the day they arrived."
"So why were they paid late?"
"It took six days for you to sign the authorisation slip."