was one of his last sculptural works. Rusty Ground was a combination of three plans Takamatsu had provided curator Manfred Schneckenburger, all based on previous Compoundworks. Originally conceived as a combination of works installed both inside a gallery and outdoors, Takamatsu had to adapt his plan when the exhibition planners included more artists who only had works suitable for indoor showing. Work Emptiness or absence for Takamatsu meant 100 percent potentiality (future), an evocation of a perfect reality without worlding or imaging it. Thus, Takamatsu's practice questions the act of seeing, consistent in his collaborations with Hi-Red Center and the Mono-ha artists. Furthermore, Takamatsu explored the differences between facts and experiences of perception, or how (visual) information is received versus how it is processed into meaning. Takamatsu wrote that human perception was inherently biased, and in order to be able to “pursue the consummate forms of things”, the artist must turn that investigation “into art.” Takamatsu's visual manipulations called into question the discrepancy between vision and real existence, between ‘to see’ and ‘to be’. Series Hiroyuki Nakanishi has considered Takamatsu's practice of producing similar works within sustained series as Takami[elevated place], the distillation of his concepts through the iterative making process. While Takamatsu was known for his rigorous planning prior to the fabrication of a work, he was also known to pay particular attention to the site-specificity of his works, and thus adjusted the materials used from edition to edition. This is documented in the production processes of Oneness at Tokyo Biennale '70 and Compound at Documenta 6. Point (1961-4) Takamatsu began his series of bent-wire works entitled Point series with Point (No. 1) (1961). Point was Takamatsu's Exploration of "a single centripetal unit that cannot be divided any further", not simply a geometric term, however, but a singular moving entity that straddled the space-time of reality and emptiness. In The World Expansion Project, Takamatsu noted how "things divide infinitely, before the quantum mechanics quest. Imagine for a moment the elementary particle which is the ultimate of division. It is ceaselessly potentiality, it is emptiness itself with infinitely increasing density". Adrian Ogas notes that Takamatsu may have had a vision that the “points” represented as a cluster of accumulated lines of cells that are creating existence, self-propagating to build a life form as yet unseen. It [string] is the non-material, abstract, conceptual object that is length (can also be thought