Atom → Bit → Pixel → Atom

I feel something strange that Tangible Media Group(TMG) studies the gestural interface which is not like the tangible. And more, TMG leaded by professor Hiroshi Ishii shows a new vision 'Radical Atoms'; Study the interface based on the material which can freely change like the pixel on the display. There is a stream of idea; Atom → Bit → Pixel → Atom. We have touched Atom for a long time. Then, we have to touch Bit like touching Atom. We have to touch Pixel like touching Atom. In the mean time, we have to touch Atom like touching Bit and Pixel. The first Atom does not change. It is just solid material. However, the second Atom can freely change. It is like fluid material. Now, we can change Bit and Pixel at our will but Atom does not. Prof. Ishii feels strange this solid Atom, therefore he give us the vision of 'Radical Atoms' for study the interface based on the idea that we can freely change the Atoms. I think that the second Atom is the new entity based on the appearance of Bit and Pixel which is always changing. Bit and Pixel is freely changing therefore we have to make a new interface in order to correspond them. It is g-stalt. This gestural interface make us re-think our actions to Bit and Pixel. This thought leads us new actions for the new fluid Atom. I think that this is 'Radical Atoms'.  In this way,　I understand why TGM studies the gestural interface like g-stalt.