Hi Wook - I saw an interesting exercise in a training session once. The class was divided up into teams and some of the teams were given a set of directions and some were not. Some were given a picture of a finished product and some were not. Some were given the directions AND the picture. Then all the teams were asked to put together a kit they had been given. The results were interesting! ( of course the teams that had the most information did the best job on the finished product.) The lesson for students? - make sure to read all directions available BEFORE plunging into your project!