Shuri’s Remote driving

24 Nov 2020 by Christopher Noessel

Remote operation appears twice during Black Panther. This post describes the first, in which Shuri remotely operates an automobile during a chase sequence. The next post describes the other, in which Ross remotely pilots the Talon.

In the scene, Okoye has dropped a remote control kimoyo bead onto a car in Singapore. (It’s unclear why this is necessary. During the chase, Klawe tells his minion the car is made of vibranium, which tells us it’s Wakandan. Wouldn’t remote control be built in? But I digress…)

T’Challa, leaving the Singaporean casino, shouts, “Shuri!” Shuri, in her lab in Wakanda, hears the call. The lab’s AI, Griot, says, “Remote driving system activated.” The vibranium dust / programmable matter of the lab forms a seat and steering wheel for her that match the controlled car’s. A projection of the scene around the controlled car gives her a live visual to work with. She pauses to ask, “Wait. Which side of the road is it?” T’Challa shouts, “For Bast’s sake, just drive!” She floors the gas pedal in her lab, and we see the gas pedal of the controlled car depress in Singapore. There ensues a nail-biting car chase.

Now, I don’t want to de-hero-ize our heroes, but let’s face it, Griot must be doing a significant portion of the driving here. Here’s my rationale: The system has a feedback loop that must shuttle video data from Singapore to Wakanda, then Shuri has to respond, and her control signal must be digitized and sent back from Wakanda to Singapore, continuously. Presuming some stuff, that’s a distance of 7633 kilometers / 4743 miles. If that signal was unimpeded light (and these quora estimates are correct) and Shuri’s response time instantaneous, it would take that signal on the order of 600 milliseconds round trip. Sure, this is specualtively-advanced, but it’s still technology, and there are analog-to-digital, digital-to-analog, encryption, and decryption conversions to be managed, signal boosts along the way, and the impedance of whatever network these signals are riding. Plus as awesome as Shuri is, her response time is longer than 0. The feedback loop would be way longer than the 100 milliseconds minimum required to feel like instantaneous response.

Without presuming some physics-breaking stuff, there will a significant lag between what’s happening around the actual car and Shuri’s remote reaction getting back to that car. In a high-speed chase like this, the lag would prove disastrous, and the only way I can apologize my way around it is if Griot spun-up some aspect of himself in the kimoyo bead sitting on the car that is doing the majority of the stunt driving. For all the excitement that Shuri is feeling, she is likely just providing broad suggestions to what she thinks should happen, and Griot is doing the rest. (Long-time readers will note this would be similar to the relationship I describe between JARVIS and Tony Stark.) Shuri is just an input. An important one—and one that would dislike being disregarded—but still, an input.

HUD notes

The HUD bears two quick notes about its display.

The hexagonal shapes in the background house the video projection.

First, the video feed around the remote operators is a sphere, onto which 2D photorealistic video projects. Modern racing games mostly use the 2D displays of televisions as well, and they’re enjoyable, but I should think that immersion and responses would be better if it was a three-dimensional volumetric display instead, improving the visual data with parallax . That would be difficult to convey on screen for the audience, but I don’t think impossible.

Third, when Klawe’s minions cause a pile-up in an intersection, Shuri’s view shows the scene with the obstacles overlaid in red. As a bit of assistance, that shows us several things. Griot is watching the scene, and able to augment the display in real time. She would find more of this context- and goal-awareness augmentation useful. For instance, she wouldn’t have had to ask which side of the road Singaporeans drive on. (It’s the left, by the way, like the UK. Her steering wheel, if it was to match the car’s, should have been on the right. Nearly all of the driving in the scene happens on the wrong side of the road to feel “correct” to right-driving audiences.)

Haptics

It’s also really interesting to note that the seat provides strong haptic feedback. When T’Challa dumps a minion from the SUV in front of the car, the controlled car speed-bumps over the body. Shuri’s seat matches the bump, and she asks T’Challa, “What was that?” (This is a slightly unbelievable moment. Her focus is on the scene, and her startle response could not help but alert her to a dark shape symmetrically expanding.) We know from motion simulators that tilting a seat up and down can strongly mimic momentum as if traveling, so I’m guessing that Shuri’s very much feeling the chase.

We are not shown what happens when T’Challa sharpens that emergency turn and lifts the real car by around 35 degrees, but Griot must have supplied her with a just-in-time seatbelt if she was angled similarly.

When Klawe manages to shoot his arm-cannon at the remotely-controlled car, destroying it, for some reason Shuri’s vibranium dust simply…collapses, dropping her rudely to the floor. This had to be added in to the design of the system, and I cannot for the life of me figure out why this would be a good thing. Just…no.

A screen shot from the movie, showing the moment when the spherical video and vibranium chair are collapsing, dropping Shuri, coccyx-first, to the floor.

Fit to purpose?

Shuri’s remote driving interface gives her well-mapped controls with rich sensory feedback, low latency, and at least the appearance of control, even if Griot is handling all the details. The big critiques are that Griot must be “there” quietly doing most of the work, that the HUD could provide a richer augmentation to help her make better real-time suggestions, and the failure event should not risk a broken coccyx.

Black Georgia Matters

Each post in the Black Panther review is followed by actions that you can take to support black lives.

Looking back at these posts, I am utterly floored at the number of things that have occurred in the world that are worth remarking on with each post. Floyd’s murder. Boseman’s passing. Ginsberg’s passing and hasty, hypocritical replacement. The national election. And while there is certainly more to say about anti-racism in general, for this post let’s talk about Georgia.

The state flag of Georgia, whose motto clearly violates the doctrine of separation of church and state. — Always on my mind, or at least until July 06.

Despite outrageous, anti-democratic voter suppression by the GOP, for the first time in 28 years, the state went blue for the presidential election, verified with two hand recounts. Credit to Stacey Abrams and her team’s years of effort to get out the Georgian—and particularly the powerful black Georgian—vote.

But the story doesn’t end there. Though the Biden/Harris ticket won the election, if the Senate stays majority red, Moscow Mitch McConnell will continue the infuriating obstructionism with which he held back Obama’s efforts in office for eight years. The Republicans will, as they have done before, ensure that nothing gets done.

To start to undo the damage the fascist and racist Trump administration has done, and maybe make some actual progress in the US, we need the Senate majority blue. Georgia is providing that opportunity. Neither of the wretched Republican incumbents got 50% of the vote, resulting in a special runoff election January 5, 2021. If these two seats go to the Democratic challengers, Warnock and Ossof, it will flip the Senate blue, and the nation can begin to seriously right the sinking ship that is America.

What can you do?

If you live in Georgia, vote blue, of course. You can check your registration status online. You can also help others vote. Important dates to remember, according to the Georgia website…

07 DEC 2020 Final day to register to vote
14 DEC Early voting begins
05 JAN 2021 Final day of voting

Residents can also volunteer to become a canvasser for either of the campaigns, though it’s a tough thing to ask in the middle of the raging pandemic.

The rest of us (yes, even non-American readers) can contribute either to the campaigns directly using the links above, or to Stacey Abrams’ Fair Fight campaign. From the campaign’s web site:

We promote fair elections in Georgia and around the country, encourage voter participation in elections, and educate voters about elections and their voting rights. Fair Fight brings awareness to the public on election reform, advocates for election reform at all levels, and engages in other voter education programs and communications.

If you don’t want to donate money directly, you can join a letter writing campaign to help get out the vote, via the Vote Forward campaign.

We will continue moving the country into the anti-racist future regardless of the runoff, but we can make much, much more progress if we win this election. Please join the efforts as best you can even as you take care of yourself and your loved ones over the holidays. So very much depends on it.

Motion Detector

30 Nov 2016 by scifihughf

Johnny, with newly upgraded memory, goes straight to the hotel room where he meets the client’s scientists. Before the data upload, he quickly installs a motion detector on the hotel suite door. This is a black box that he carries clipped to his belt. He uses his thumb to activate it as he takes hold and two glowing red status lights appear.

Once placed on the door, there is just one glowing light. We don’t see exactly how Johnny controls the device, but for something this simple just one touch button would be sufficient.

A little later, after the brain upload (discussed in the next post), the motion detector goes off when four heavily armed Yakuza arrive outside the door. The single light starts blinking, and there’s a high pitched beep similar to a smoke alarm, but quieter. Continue reading →

Damage Control

27 Sep 2016 by claytonbeese

After the Galactica takes a nuclear missile hit to its port launch bay, part of the CIC goes into Damage Control mode. Chief Tyrol and another officer take up a position next to a large board with a top-down schematic of the Galactica. The board has various lights in major sections of the ship representing various air-tight modules in the ship.

After the nuclear hit, the port launch bay is venting to space, bulkheads are collapsing in due to the damage, and there are uncontrolled fires. In those blocks, the lights blink red.

Colonel Tigh orders the red sections sealed off and vented to space. When Tigh turns his special damage control key in the “Master Vent” control, the lights disappear until the areas are sealed off again. When the fires go out and the master vents are closed, the lights return to a green state.

On the board then, the lights have three states:

Green: air-tight, healthy
Blinking Red: Fire
Off: Intentional Venting

There does not appear to be any indications of the following states:

Damage Control Teams in the area
Open to space/not air-tight

We also do not see how sections are chosen to be vented.

Why it works

The most effective pieces here are the red lights and the “vent” key. Chief Tyrol has a phone to talk to local officers managing the direct crisis, and can keep a basic overview of the problems on the ship (with fire being the most dangerous) with the light board. The “vent” key is likewise straightforward, and has a very clear “I’m about to do something dangerous” interaction.

What is confusing are the following items:

How does Chief Tyrol determine which phone/which officer he’s calling?
Who is the highest ranking officer in the area?
How does the crew determine which sections they’re going to vent?
How do they view more complex statuses besides “this section is on fire”?

As with other systems on the Galactica, the board could be improved with the use of more integrated systems like automatic sensors, display screens to cycle through local cameras, and tracking systems for damage control crew. Also as with other systems on the Galactica, these were deliberate omissions to prevent the Cylons from being able to control the Galactica.

One benefit of the simplified system is that it keeps Chief Tyrol thinking of the high-level problem instead of trying to micromanage his local damage control teams. With proper training, local teams with effective leadership and independent initiative are more effective than a large micro-managed organization. Chief Tyrol can focus on the goals he needs his teams to accomplish:

Putting out fires
Evacuating local crew
Protecting the ship from secondary explosions

…and allow his local teams to focus on the tactics of each major goal.

What it’s missing

A glaring omission here is the lack of further statuses. In the middle of a crisis, Chief Tyrol could easily lose track of individual teams on his ship. He knows the crews that are in the Port Hangar Bay, but we never hear about the other damage control teams and where they are. Small reminders or other status indicators would keep the Chief from needing to remember everything that was happening across the ship. Even a box of easily-grabbed sticky notes or a grease-pen board would help here and be very low-tech.

Possible indicators include:

Secondary lights in each section when a damage control crew was in the area
A third color indicator (less optimal, but would take up less space on the board)
A secondary board with local reports of damage crew location and progress
Radiation alarms
Extreme temperatures
Low oxygen states
High oxygen states (higher fire risk)
Structural damage

It is also possible that Colonel Tigh would have taken the local crews into consideration when making his decision if he could have seen where they were for himself on the board, instead of simply hearing Chief Tyrol’s protests about their existence. Reducing feedback loops can make decision making less error prone and faster, but can admittedly introduce single points of failure.

Colonel Tigh and Chief Tyrol are able to get control of the situation with the tools at hand, but minor upgrades could have lessened the stress of the situation and allowed both of them to think clearer before jumping to decisions. Better systems would have given them all the information they needed, but the Galactica’s purpose limited them for the benefit of the entire ship.

Lifeclock: The central conceit

25 Sep 2013 by Christopher Noessel

The central technological conceit of the movie is the lifeclock, a rosette crystal that is implanted in each citizens left palm at birth. This clock changes color in stages over the course of the individuals lifetime.

Though the information in the movie is somewhat contradictory as to the actual stages, the DVD has an easter egg that explains the stages as follows.

White		Birth to 8 years
Yellow		9 to 15 years
Green		16 to 23 years
Red		24 years to 10 days before Lastday (30 years)
Blinking Red		from 10 days before Lastday to Lastday
Black		End of Lastday (Carousel/death)

Lifeclocks derive their signal and possibly power from a local-area broadcast in the city. When Logan and Jessica leave the city their lifeclocks turn clear.

The signal of the lifeclock is so central to life that most citizens dress exclusively in colors that match their lifeclock color. Only certain professions, such as Sandmen and the New You doctor, are seen to wear clothing that lacks clear reference to a lifeclock color, even though the individuals in these professions have lifeclocks and are still subject to carousel at Lastday. We can presume, though are not shown explicitly, that certain rights and responsibilities are conferred on citizens in different stages, such as legal age of sexual consent and access to intoxicants, so the clothing acts as a social signal of status.

As an interface the lifeclock is largely passive, and can be discussed for its usability in two main ways.

Color

The first is the color. Are the stages easily discernable by people? The main problem would be between the red and green stages since the forms of red-green color blindness affects around 4% of the population. To accommodate for this, reds are made more discernable with a brighter glow than the green. As a wavelength, red carries the farthest, and blinking is of course a highly visible and attention-getting signal, which makes it difficult for an individual to socially hide that his or her time for carousel has come.

Black is a questionable signal since this indicates actual violation of the law but does not draw any attention to itself. Casual observation of a relaxed hand with a black lifeclock might even be mistaken for a colored lifeclock in shadow, but as the citizenry has complete faith in the system and a number of countermeasures in place to ensure that everyone either attends carousel or is terminated, perhaps this is not a concern.

But if we’re just going on human signal processing, the red should be reserved for LastWeek, and a blinking red for after LastDay. That leaves a color gap between 24 and 30. I’d make this phase blue, since it looks so clearly different from red. The new colors would be as follows.

White		Birth to 8 years
Yellow		9 to 15 years
Green		16 to 23 years
Blue		24 years to 10 days before Lastday (30 years)
Red		from 10 days before Lastday to Lastday
Blinking Red		End of Lastday (Carousel/death)

Location on the body

The second question is the location of the lifeclock. Where should it be placed? It is a social signal, and as such needs to be visible. The parts of the body that are most often seen uncovered in the film are the hand, the neck, and the head. The neck and head are problematic since these are not visible to the citizen himself, useful for reinforcing compliance with the system. This leaves the hand.

Given the hand, the palm seems an odd choice since in a relaxed position or when the hand is in use, the palm is often hidden from view of other people. The colored clothing seen in the film show that a citizens life stage is not really considered a private matter, so a location on the back of the hand would have made more sense. To keep it in view of its owner, a location on the fleshy pad between the thumb and the forefinger would have made a better, if less cinematic, choice.

Sci-fi interfaces

Stop watching sci-fi. Start using it.

Tag Archives: red is warning