Wait, hang on, when they say it's visible to the naked eye, do they mean the paddle is visible? Or that the phenomenon of it vibrating and at the same time standing still is visible to the naked eye?
Because I thought observation would force it to collapse into a single quantum state, ie either vibrating or still. Therefore, according to my Quantum Theory for Beginners understanding, it would be impossible to see it vibrating and standing still at the same time.