So, I signed up for a Coursera MOOC, and almost immediately the experience turned into Lucy and the Chocolate Factory. It’s a scene that suckers itself onto almost any stressful situation.  Lucy and Ethel take a job putting chocolates into wrappers.  It’s a conveyor belt scenario, and the task itself is simple; the challenge is to keep pace. Lucy’s enjoying herself, messing about.  But one stumble leads to a recovery problem, and before they know it Lucy is eating chocolates…