The Disastrous Exam For three years a Phd student from Cambridge University laboured on his thesis on Metaphysics. He handed in his final report and prepared himself for his viva - an oral exam where he could be grilled on anything from his subject. However he felt confident, he had worked on this subject for the past three years after all... The day of the exam came and he stood in front of a panel of three professors, one of them he didn't recognise. All was going to plan with complex questions about particle physics being asked and, on the student's part, well answered. This however was until the unfamiliar examiner spoke: "what is the wavelength of visible light?" he asked in a matter of fact tone. Shit. Wavelength of visible light?! That's not my topic, but it's such a simple question! I think I did that in High School... "Erm... 2 millimetres?" the student coughed out, all flustered. The examiner got up scraping his chair against the floor. He walked slowly up to the student gradually getting closer until his nose was nearly touching the student's nose. "DO I LOOK BLURRY TO YOU????" asked the professor. - true story.