Art + Design

MECHANICAL ORACLE

AN IMMERSIVE INSTALLATION

Personal visions caught
in an infinite black mirror
of rising words.

Introduction

The Mechanical Oracle is a performative machine that combines digital technology, a shape-shifting black mirror, projected light and an immersive soundscape to create stories that invite us to consider how the future can be imagined.

The machine performs two contrasting acts, each approaching the imagination in a different way. The first act is surreal, illusionistic and abstract, generating a space in which viewers can reflect on the dogmas of progress. Enveloped by light, movement and sound, viewers experience an immersive, liminal space - one that encourages them to suspend certainty, follow their own associations and imagine what might lie ahead.

The second act shifts into a documentary register, bringing together practitioners whose work involves imagining, anticipating and preparing for possible futures. Their perspectives outline strategies for moving beyond our tendency to imagine the future beyond our own biases or fears. These draw the viewer into different modes of thought, building a more nuanced understanding of how we might anticipate and actively shape what comes next.

Taken together, the two acts engage different capacities of the imagination: the poetic opens a space for possibility and free association, while the interviews offer a more critical and informed framework for envisioning what has not yet happened. Together, they invite the viewer to move between intuitive speculation and deliberate reflection.

Oracle Mechanics

The installation originated in an interest in the phenomenon of a shape-shifting black liquid known as ‘ferrofluid’ - a magnetic oil that can be made to morph into semi-solid forms through the application of a magnetic field.

By creating a three-by-one-metre horizontal pool of ferrofluid, the material suggested a new kind of “screen” - one that called for its own mode of representation. The key discovery came when the oil was viewed in a darkened room. Its perfectly smooth black surface disappeared from sight, creating the illusion of a rectangular window cut into space - an opening to lean in and imagine.

Above the oil, a rear-projection screen hangs just beyond head height, receiving black-and-white imagery from a projector mounted at the apex of the installation. When viewers peer into the oil, they see this imagery reflected from the screen above. The distance between the two surfaces makes the reflection appear to float far beneath the floor, producing the disorientating sensation of looking over the edge of a cliff - or into the depthless interior of an enormous VR headset.

Beneath the oil, 180 rare-earth magnets rise and fall in synchronization, moving in a precisely timed dialogue with the projection above. Their magnetic fields draw the oil into three-dimensional words and patterns, bringing language into physical form before it recedes back into darkness.

As each performance unfolds, the viewer’s eye moves between words materializing in the foreground and spectral images suspended in the apparent distance. This involuntary switching of focus intensifies the sense of immersion, helping to draw the viewer into the imaginative space of each performance.

The combined effect recalls the ancient practice of scrying, in which reflective or translucent surfaces were observed for signs of future events. The installation borrows this historical framework not as a means of prophecy, but as a metaphor for the human impulse to search for meaning amid uncertainty and to imagine what lies ahead.

ACT ONE : LET THEM NOT SAY

A POEM BY HIRSHFIELD PERFORMED BY GEO ESPILANTY

The first act operates in a poetic and associative register, using illusion, abstraction and sensory immersion to loosen familiar ways of thinking. Its performances move between climate crisis, technological rhetoric and the dogmas of progress, allowing meaning to emerge through the interaction of projected imagery, shifting oil and sound.

The mechanism first revealed its potential as a medium for futures-based storytelling through an adaptation of Jane Hirshfield’s poem Let Them Not Say. The poem anticipates future regrets about a changed climate from the vantage point of the present. Hirshfield’s words opened the Oracle to a form of time travel, inspiring subsequent pieces that approach the future from different directions.

ACT ONE : GOGOL

ABSTRACTED REFLECTIONS SET TO PIANO

Projected and reflected lights dance in time with this solo piece for piano, written and performed by Chilly Gonzales. An abstract intermission in which the light sculpts itself around the mounds of oil, which are in turn sculpted by the invisible lines of magnetic flux created by the magnets.

ACT ONE : SPEED SICKNESS

TO ACCELERATE WITHOUT SAVING TIME

Speed Sickness takes its starting point from Wolfgang Sachs’s essay “Speed Limits,” published in the catalogue for “Speed-Visions of an Accelerated Age” at the Whitechapel Gallery. The essay questions the logic of using fossil fuels to accelerate progress in order to “save” time, when time itself cannot be saved. The viewer travels along an endless highway at breakneck speed as the sequence moves between clarity and motion sickness.

ACT ONE : CHEMICAL VERTIGO

ASCENDING THE GREAT ACCELERATION

Draw a line between two points on a graph then extend it forward, and it creates a predictive path into the future. The line might waver at times, but stand back far enough, and the general shape becomes clearer to see. 

The line of the Great Acceleration represents the shape of 20th century progress. Notable for the sharp curve upwards at the end, it maps the industrial revolution and its consequences - from population growth to energy consumption, or in this sequence, the rise of carbon dioxide in our atmosphere.

The line embodies human progress, as its extension predicts our downfall. It marks a tipping point in time when the march of human progress needs balancing in order to keep our forward facing momentum.

Kenta Gamba is the slack-line performer and the music is by Cato.

ACT ONE : THINK DIFFERENT, DON'T BE EVIL

THE FUTURE IS OURS TO CREATE

Recited by a synthetic voice and delivered by a digitally generated face, this implausible mission statement promises an impossible future where technology makes everything smarter, simpler, faster.

By reciting the rhetoric of Silicon Valley corporate tech, the robotic face delivers a string of familiar aspirational claims, wrapped in an overblown promise that feels both shallow and profound.

ACT 2 : THE INTERVIEWS

HOW IS THE IMAGINATION IMPORTANT?

This act is still a work in progress, but the current interviewees include an Afrofuturist, a neuroscientist, a futures design strategist and a technology researcher. Their responses help explain how our ability to imagine the future is conditioned - and often constrained by past experience. The interviewees consider why it is so difficult to conceive of futures beyond what we already know, while offering strategies for extending the imagination beyond the boundaries of the familiar.

In the second act, four futures thinkers approach a shared set of questions from distinct disciplinary perspectives. Comparative cross-cutting places their responses in dialogue, revealing both common ground and productive tensions that deepen our understanding of the questions being asked.

Taken as a whole, the dramaturgy of the Mechanical Oracle moves from the pressures of the present towards a more open proposition about what might come next. The performances are critical, informational, evocative and, at times, nostalgic. Together, they ask viewers to consider how dominant images of the future are produced, whose interests they serve, and what other futures might become possible if familiar assumptions could be temporarily suspended.

ENGINEERING THE MECHANICAL ORACLE

The magnets are arranged to produce a unique hexidecimal font, capable of producing any letter from “a” through to “z”, or numbers “0” through to “9”.

The first “proof of concept” prototype used electrically controlled solenoids to punch the magnets up and down. 

The prototype was successful in so far as it showed the principle of writing with magnetic oil could work, but the movement of the magnets was too abrupt, making the oil wobble like jelly. 

The next prototype used multi-threaded shafts set in bearings, spun around by servo motors. Neat as this solution was, the parts were too expensive to scale 180x (one unit for each magnet)

Someone once told me to keep an ‘inventors book’ documenting every step of the process. I ended up with 3 books, each a couple inches thick. These pages show the finished circuit board designs.

At the heart of the system - this simple motor driver circuit, capable of controlling 2 motors. My finished circuit design squeezes 9 of these onto a single board - enough to control 18 magnets per unit, and produce a single letter.

The frame design was tested using cardboard cut with a laser. The actual frames were cut from aluminum using a water-jet. Since both technologies are based on the same principle, I could be (mostly) confident that they would come together in the end.

Mechanically and electrically identical to the final design, this detailed prototype confirmed the magnets would produce legible letters and numbers, appearing and disappearing at a comfortable pace.

Switches detect when magnets have reached the maximum limit of their movement. These mechanical switches were later replaced with optical switches - which are far more robust and don’t produce a “clicking”sound.

The system includes just enough feedback to detect when magnets have reached the maximum limit of their movement. These mechanical switches were later replaced with optical switches - a more robust and quiet solution.

To help improve the legibility of each letter, the magnets are arranged with their polarity in mind, so the oil tends to conjoin or divide, depending on the position of each segment.

3D printing the magnet mounts saved time and enabled successive iterations, helping tighten the design and push the segments closer together.

One of 11 fully assembled units, showing the aluminum frame, finished circuit board design and all of the magnets in place.

The design includes several features that will help keep the installation in service - such as these motor driver chips, mounted on removable miniture circuit boards.

Using rare-earth magnets instead of electromagnets generates a huge saving in electrical power. The system makes intermittant use of 12v and 5v supplies - seen here as tranformers mounted along the base.

The overhead rear projection screen hangs on cables suspended from a secondary frame that also supports the video projector. The structure can hang from ceiling mounted bolts, or load bearing trusses.

Steve Thompson welding the aluminum structure at the Exploratorium workshop in San Francisco.

Images projected onto the overhead screen are seen reflected in the oil below.

The kinetic words interact with the projected image, flexing the light around the magnetically produced forms.

The Magnetic Letterpress is programmed using this software application - built by Stephen Braitsch using Open Frameworks. It features a timeline with editable keyframes - used to tell the system when to move magnets up or down.