We are groping around for the courtship action to the digital world which is not able to see and touch

I think that we have aimed to bring our action in the physical world into the virtual world as it stands until now. However, PINCH of iPhone may make us know that we do not necessarily bring our action into the virtual world as it stands. Although PINCH does not make something big or small in the physical world, we control two points of a diagonal line in order to draw a quadrangle in the virtual world like Adobe Illustrator. PINCH makes a movement of diagonal, therefore we may superimpose this hand movement and the movement for drawing a quadrangle in the digital world. As result, we naturally accept the relationship between PINCH and Zoom in and out. I consider that it is big problem to explain what makes us naturally accept the relationship between our gestures and the image action or feel something strange for it. We have to be careful and aware of what our unconscious gestures mean and correspond them to the image movements and actions in the virtual world.

However, it is our contention that gesture ─ certainly descriptive or 'iconic' gesture ─ necessarily involves indexical links to the material world, even though these links are rarely established or explicated in the communicative situation itself. Rather, in conversational contexts that are detached from the talked-about world, participants must fill in encyclopedic knowledge (ranging from universal bodily experiences to highly specific cultural practices) to see and recognize gesture. Phenomenally, there are only motions of the hands. What is perceived, however, is typically not motions but actions and, simultaneously, implied objects acted upon.

Curtis LeBaron, Jürgen Streeck, 'Gestures, knowledge, and the world' In David McNeill(Ed.), Language and Gesture, pp.118-138 (2000)

Finally, I think that a big change will happen because the digital which is no material and shape intervenes in our gesture communication based on the material and shape of our body. To show our will to the digital world. Conversely, the digital world shows its own will to us. I formerly called this correlation 'Display acts' which the image on the display changes corresponding to our actions. Now, I consider that 'display acts' is, connected with 'display' means the bird's action of the courtship, a courtship dance or action between the human and the digital furthermore, the human and the human through the digital. We are groping around for the courtship action to the digital world which is not able to see and touch. I want to feel the touch of the digital world.