 The idea of the pieces, when you can walk through, if you stand up in the center, all the pieces are in the eye level, and you see in some way like a perspective from the center to outside. Potentially, you can touch all the pieces. Everyone is on your hand distance. It's very important, the experience. When you are close to the piece, you can see in images, in pictures, but it's really different than the physical experience. The most important tool of the human is the language, to understand, to classify, to divide and transform an idea. The history of the tools is a book which I tried to find many times. I went to bookstores and I asked, do you have a book about the history of tools? And it was not existing. The invention and the imagination of the scientists is creative and playful and experimental and joyful like the artist. Then it's difficult to separate and to split the science or technology with the art and science or with the real tools, let's say, or the art tools.