Grid-29 was inspired by genetics--more specifically cloning. While genetics covers a wide spectrum of practices, cloning is one of the more popular and controversial ones. Whether it is for its highly marketable concept and its suitability for Hollywood sci-fi flicks, or its controversial history and media coverage dating back to Dolly the sheep (the first reported mammal to be cloned), cloning was the first thing that came to mind when thinking about genetics.
Grid-28 was inspired by the Aztec number system and time. The composition is generally divided into four quadrants and the dividing strips meet towards the middle in a swirl-like arrangement that suggest cock-wise rotation--all of these details are similar to those of a clock. The 2nd and 4th quadrants are filled with horizontal strips that gradually become shorter as they approach the corners, suggesting a gradual progression such as that of a timer. The rest of the quadrants contain rectangles and squares arranged in a similar fashion to the Aztec number system. The 1st quadrant has the lesser value, while the 3rd quadrant has a greater value--suggesting incremental growth.
Grid-27 was aimed at combining perception and reality in a similar way as Grid-15 but in a more direct and stripped-down fashion. The tunnel-like borders encapsulate the main subject (an eye symbolizing perception) in layers similar to those found in video feedback loop effects (also known as Optical feedback). The three triangles pointing towards the eye symbolize stimuli being taken in by the senses.
Grid-26 deals with balance: evenly spaced spike tips, but not at the base of the triangles; triangles pointing up and down, but only one pointing up; one square in each rectangular half, but both loosely positioned--yet somehow still managing to balance out the composition.