dr.karl.b asks: "My 3 and a half year old son is in Kindergarten. Here in Germany that includes 3 to 6 year olds. He is supposed to explain what his parents' occupations are. I am a scientist, and despite all the advice I have received saying he can't understand what I do, I am determined to try. I study self-motion perception, from basic-science vestibular processing to the role of real-motion cues in flight simulation. We have several cool labs in my institute, like robot-arm motion simulators and full-immersion virtual reality set-ups. We can easily compete with amusement parks for wow-factor, but I have 2 questions: How can I explain my work to my son? How can I invite his class (3-6 yr olds) to our institute to have them learn AND have fun, rather than ONLY have fun?"