A flip dot is an electromagnetically actuated disc: a small magnet holds it in one of two stable positions (dark or reflective) until an electrical pulse switches it. No power is consumed to hold either state — only during the transition. This is the same principle used in station departure boards since the 1960s. In Cloud, 5,000 of these dots are arranged across the sculpted surface of the cloud form, sequenced by custom animation software that patterns across them in varying densities — lighter at the edges, heavier at the centre.

Because each dot is bistable and consumes no power when still, the energy load of the full installation is remarkably low compared to any LED or projection equivalent. There is no video signal, no refresh rate, no heat load from the display surface. The mechanism clicks quietly — a sound Troika deliberately kept as part of the piece's texture, audible between the ambient sounds of the lounge.

Rainwater hits the inner slope of the toroidal roof and flows to a slot opening forming the perimeter of the 12-metre central oculus. Gravity draws it into a vortex column — the spinning motion is created by the geometry of the slot, not mechanical agitation. The water descends seven above-ground storeys openly, then enters a giant acrylic funnel engineered by Reynolds Polymer Technology: 40 panels of 2.5-inch-thick acrylic, bonded seamlessly on site, the largest monolithic acrylic structure ever built.

The funnel guides the fall through two below-ground retail floors without splashing. At the base, water is collected and pumped back to the roof to maintain constant flow. Modelling the thermodynamic and air-movement impact of 23m³/min of falling water was complex enough to require Siemens supercomputers — Atelier Ten's internal CFD software lacked the processing power for the model. A glass balustrade at the valley-floor reflection pool prevents lateral air forced out by the falling vortex from affecting the pedestrian plaza.

The timber ceiling is primarily structural and environmental: 49 skylights reduce electrical lighting demand sufficiently to halve the terminal's energy use per square foot while doubling its capacity. The 120-foot video wall integrates content developed with local artist Ivan McClellan around six Pacific Northwest landscape sequences. The wall reads live inputs — time of day, exterior weather conditions, measured passenger volume — and dynamically adjusts which content sequences play and at what pace, producing an experience that is never identical across two visits.

Yoonhee Choi's glass walls are static commissions using mixed-media collage translated into large-format glass, with intentional blank space — the artist described wanting "room for interpretation" within each pane. Sanford Biggers' suspended works hang at the concourse connector boundary, visible from both the pre- and post-security zones. The overall design philosophy refuses to separate architecture from art: the building is the primary installation, and the commissioned artworks are layers within it rather than objects placed inside it.

Echelman works with PTFE and ultra-high-molecular-weight polyethylene (UHMWPE) — synthetic fibers 15 times stronger than steel by weight, yet light enough to respond to faint air currents from building ventilation. Studio Echelman's two full-time architects use custom Autodesk simulation software to model the drape behaviour under gravity and variable wind before any physical fibre is cut. The knotted form is built in multiple interlocking layers of twines that interplay with each other and with projected light.

Arup's specialist lighting team designed the programmable LED projection system: as coloured light sweeps across the sculpture, the net casts shadow drawings in vivid hues that travel from wall to wall continuously, shifting through colour permutations over a cycle timed to unfold as slowly as a sunset. The 4,000 square foot textile floor below is patterned with the same topographic data as the net above — completing an environment that inverts the normal experience of looking up at art by making the floor a mirror of the sky.

The AI system is a deep learning model trained on the movement patterns of specific endangered animal species. Live environmental feeds — current sun angle, measured cloud density, exterior weather conditions — are processed by the model and used as parameters to drive the ceiling-mounted robotic structure. The structure physically shifts in response: its form changes to embody the specific animal being depicted in that environmental moment. The result is a ceiling that is never the same twice, its motion partly authored by the AI and partly by the weather outside the airport.

Moment Factory's adjacent 16K LED screens operate on a separate logic: pre-authored high-resolution content delivered through curved display infrastructure. The curved geometry of the screens creates a trompe-l'oeil depth effect visible from multiple angles across the departure hall — a technique Moment Factory also deployed at Changi T4. Both systems coexist in the same terminal: the AI-robotic ceiling is continuously generative; the Moment Factory screens are programmatic and authored.

The system runs on Moment Factory's proprietary X-Agora software platform: eight servers and twenty X-Agora players manage interactive real-time 3D, live data feeds, and pre-rendered video content simultaneously. The Concourse Portals — ten video columns — use motion sensors to detect the presence and flow of people and update their display in real time, delivering custom visual content for each of the terminal's fifteen major destination cities. The Time Tower's four-sided 72-foot trompe-l'oeil system synchronises with real clock time to trigger the hourly Busby Berkeley reveal.

Content production involved every technique in Moment Factory's arsenal: documentary filming, time-lapse, ultra-high-speed slow motion, live-action actors and elaborate sets, on-location filming, pure 3D production, and 3D composited with live action. The integration of all systems was handled by Electrosonics. The architecture firms Sardi Design and MRA International, and systems designer Smart Monkeys, each had defined roles — Moment Factory's unusual position as executive content producer rather than lead designer makes this one of the clearest examples of a studio-led media programme within an architectural project.

Each of the 1,216 droplets is attached by a thin steel rope to a dedicated precision servomotor hidden in the ceiling. The motors are compact, low-vibration units selected specifically for near-silent operation in a busy public terminal. A central computer runs a 15-minute computationally designed choreography programme that drives all 1,216 motors simultaneously — raising and lowering each droplet on its independent rope according to a score that produces 16 distinct figurative and abstract shapes.

The two sections of 608 droplets each move in dialogue: sometimes mirroring each other symmetrically, sometimes forming complementary halves of one image, sometimes responding to each other as call and response. FELD Studio authored the motion design — the temporal sequencing that determines how each shape flows into the next. The installation can be viewed from above, below, and all sides, with the visual experience changing dramatically by angle and elevation as the copper surfaces catch and reflect ambient terminal light.

Villareal writes custom software in Max/MSP/Jitter — the same programming environment used for real-time audio/video processing — to control LED arrays. For The Bay Lights, his software creates three-layer control of what he calls the "pixel grid" formed by 25,000 LEDs at one-foot intervals along the bridge's 300 suspension cables. Each LED can be set to any of 255 brightness levels independently, producing a tonal range far beyond binary on/off. The non-repeating algorithm generates abstract patterns inspired by the Bay's physical environment — waves, wind, traffic — but never directly represents them.

For Bay Lights 360, Musco Lighting engineered a purpose-built system designed specifically for the bridge's conditions: marine salt air, wind loads, cable vibration, and the need for decades of reliability rather than the two-year permit window that constrained the original. This is a significant engineering distinction: the 2013 system was adapted professional hardware; the 2026 system was designed from scratch for a specific infrastructure environment. The artist's algorithm is only half the work. The other half is the metallurgist, the weatherproofing engineer, and the vibration analyst.