An Irishman and a Brit are both applying for an engineering job in Dublin.
The manager gives them both a test.
When they complete the test, the manager says,
"Well, after looking over the test, the job goes to the Brit."
The Irishman complained, "Hey, what gives? We both missed only one question, and I'm Irish, so I should get the job."
The manager replies, "Yes, you both missed question 5, but we graded it based on the wrong answers to that question. The Brit answered 'I don't know', and your answer was 'Neither do I'."