As a boy at grammar school I remember at exam time being told very bluntly to read the questions. The other day someone told me that they'd once read of an exam where a group of students were assembled and at the very top of their paper it said that they should read through the whole exam paper before answering anything. As usual once they'd been told to begin it was heads down and utter silence except for the occasional rustle of paper, then rapidly the pens began scratching away. After about five minutes one student looked up from reading the last page of the paper, looked around, hesitated for a few minutes, looked again at his paper, looked around once more, then back at the paper and then carefully folded it, got up handed it in and left. Everyone else continued writing away until the time was up. Later, when the results came out the only one who passed was the lad who left after five minutes. Why? At the bottom of the last page of the exam paper it said, 'Don't a...