> An intelligent "layman" might watch the video and declare, "Math proves that 1 + 2 + … = -1/12" Indeed, I have seen this exactly happen, with a secondary-sch

> An intelligent "layman" might watch the video and declare, "Math proves that 1 + 2 + … = -1/12" Indeed, I have seen this exactly happen, with a secondary-school student. It took me some time to explain why it's rubbish-at-a-school-level.