Carlo Rovelli said "Time does not exist".("The Order of Time" - Japanese translation version, NHK Publishing, Inc., 2019.) There is "uncertainty" in the discovery of quantum gravity. "For example, no one predict accurately where an electron will appear tomorrow." "In terminology of physics, this is said to be in a "superposition" state." "Spacetime is a physical subject same like an electron. And also is sways. Moreover, it can be in a "superposition" state." "Therefore, the classifications of present, past and future is swaying and became uncertain." (p.89-90)
"What is "present"? What is "existing"? The answer is "These questions are wrong." These questions mean everything and also nothing. Because the word "present" is ambiguous and have many meanings." (p.110) The classifications of present, past and future "are valid only in "here" right next to us now." (p.111) "There are changes in this world, and the relationships between events have a temporal structure, and those events are not illusion. Events do not occur in the holistic order, but in complex ways in a corner of the world." (p.113)
After Einstein's Theory of Relativity in 1915 and Watson and Crick's discovery of DNA in 1953, not only physics, but all subjects were updated, and scientific subjects such as IT, AI or STEM became dominant. But still we do not know anything about the before development and after extinguishment which is the essence of extinction and death. In the geological era that classifies 4.6 billion years, humans believe that the present is continuing from "Holocene" 11,700 years ago, but they are trying to make it "Anthropocene" from the 1950's. (Asahi Shimbun morning newspaper, June 1, 2021) What a curse?
The classifications of painting and sculpture, two-dimension and three-dimension, abstract and figurative, modeling and ideas, and physical and metaphysical, are also not exist such as spacetime? This is the first collaboration exhibition between Kiyoshi Hamada and Hikaru Yumura, but I feel their art works are very similar in this sense. Hamada and Yumura's artworks are paintings and sculpture, and two-dimension and three-dimension, as well as abstract and figurative. Yumura's artworks have a glimpse of the substance rather than the metaphysical. On the other hand, Hamada's artworks lose its substance, and for that reason, the essence of substance appears. Then, the substance of Yumura's artworks lose its shape and become metaphysical. I have previously pointed out that Hamada's recent two-dimmentional artworks are actually three-dimmentinal artworks because thay have unevenness which were created by digging and drawing that creates shadows. Since the new Hamada's painting, in which shapes were drawn with black lines on an orange background, is in the extension of previous paintings with unevenness, even if the unevenness does not appear as substance, I interpret this artwork is the same quality in metaphysical concepts. At the same time, Hamada's artworks have many layers, so the line of sight to see the three-dimensional is essential instead of the two-dimensional.
The other day, I came into contact with Yumura's artworks at his atelier in Kasumigaura for the first time in my life. Divide a huge black granite with arrow, and shift them to exhibit. That's it, but I did not feel any flow of art history such as Mono-ha or Minimal in his artworks. By dividing the stone, he creates the relationship between the density of black granite and gravity. Although most of black granite was generated in the Mesozoic era, some of it can be traced back to the Cambrian period. Yumura discloses the gravity of the black granite that has been generated over endless years. Is there more art than his works?
When I was looking at the catalogue of Yumura's artworks, I remembered Hamada's artworks that I actually saw. After actually seeing Yumura's artworks, the keyword of this critique became "Edge". I considered previously that "the work of Takeo Yamaguchi in his late years was not drawn all over with black line, but the criticism of civilization was hidden at the edge of line." ("About the Matiere of 'Ki - track' by Takeo Yamaguchi" in "Research Bulletin of Yokohama Museum of Art" No.9, 2018) It was a hint for the idea. I would like to pay attention to the edge of Hamada's line, the edge of Yumura's crack, not the inside and outside, but the itself and "events" of other things.

Tetsuya Miyata - Researcher of Intellectual History of Modern Japanese Art