Amir Bastan, Noor Stenfert Kroese and Johannes Braumann have built an installation called MycoGravity at Creative Robotics, University of Arts Linz. A KUKA Iontec K30R2100 six-axis industrial arm carries a custom bioreactor on its end effector, and inside the bioreactor pink oyster mycelium (Pleurotus djamor) is growing. The arm never settles. They call its path a quantised random walk, borrowed from NASA's random positioning machines: pick points in three-dimensional space, rotate across multiple axes while transitioning between them, repeat. Subdermal needle electrodes read the mycelium's bioelectric activity; the outer shell carries temperature, humidity, CO₂, light and an IMU. All of it streams to a local server, which feeds back into both the robot's motion and the conditions in the chamber.

The point is that gravity is not removed. It is still there, still 1g, undiminished. What is removed is direction. The principle is called vector averaging: the gravitational vector is continuously reoriented so that it never holds one bearing long enough for the fungus to align to it. They are careful to add that the effect does not depend on speed — slow multi-axial rotation is enough to disrupt gravitropic sensing.

Look at what is being chiselled here. Gravitropism is one of the most completely finished constructs in biology. Gills face down, shoots go up, roots go down: observed, named, written into every textbook, the chisel-construct cycle closed more than a century ago. It is now a sentence, a term, a diagram. There is nothing left in it to cut. And what Bastan and his collaborators do is not add another variable to the system. They withdraw the reference itself. The chisel this time is negative: it does not land on the material, it lands on the premise the material forms against — the thing that is never treated as a premise, never written into the equation, precisely because it is too stable to notice.

So what grows is neither designed nor random. It is the residue of an intact sensing system running on an input that has no solution. The mycelium's gravitropism is not broken. The electrodes keep recording. It keeps measuring, keeps aligning to a down that keeps moving — and the resulting form is the sediment of that continuous aligning. This thing has no name. You could file it under bio-art, but bio-art is a 1990s construct: transgenics, tissue culture, Kac's rabbit, an entire ethical theatre about manipulating life. MycoGravity manipulates nothing. It withdraws a coordinate system. You could file it under robotic art, but the arm is not a performer here; it is a machine whose job is to make something not happen. Both slots already exist. Neither one fits.

Their FAQ contains a question that is honest to the point of being moving: "Why don't I see mushrooms right now?" Sometimes there is only mycelium in the chamber and no fruiting bodies. The work is empty; the installation runs anyway, produces data anyway. What you see depends on when you visit. That emptiness is not a fault and it is not a piece of Zen — it is the remainder itself: the work's output is not on the exhibition's schedule. And afterwards the mushrooms are neither harvested nor eaten. They are dried and kept, as a physical record of how they responded to unfamiliar forces. A dried specimen that is simultaneously sculpture, data, and an orientation that never resolved.

Seeing it now matters more than seeing it later, and the reason is in their own text: how fungi sense gravity is "still largely unknown." That sentence is the proof that the remainder is alive — the question has no answer yet, so there is no construct yet. And the absorption has already started. Ars Electronica showed it in 2025; CreativeApplications covered it in August 2026; TU Delft has written about it; there is a conference paper. Space agriculture, astromycology, fungal biocomputing — those slots are all waving, and they are all filling fast. The moment MycoGravity becomes "an artistic demonstration for microgravity crop research," it is construct: correct, handsome, no longer growing. Go now and you still see the stranger thing — three people built a several-hundred-kilogram industrial machine whose only function is to make an organism permanently unable to determine which way is up, and then patiently recorded it going on trying.

Han Qin (秦汉) · @hqinjarsy · SAE Judgment & Aesthetics