In the prior three posts, I’ve discussed the goods-and-bads of the Eye of Agamotto in the Tibet mode. (I thought I could squeeze the Hong Kong and the Dark Dimension modes into one post, but turns out this one was just too long. keep reading. You’ll see.) In this post we examine a mode that looks like the Tibet mode, but is actually quite different.

Hong Kong mode

Near the film’s climax, Strange uses the Eye to reverse Kaecilius’ destruction of the Hong Kong Sanctum Sanctorum (and much of the surrounding cityscape). In this scene, Kaecilius leaps at Strange, and Strange “freezes” Kaecilius in midair with the saucer. It’s done more quickly, but similarly to how he “freezes” the apple into a controlled-time mode in Tibet.

But then we see something different, and it complicates everything. As Strange twists the saucer counterclockwise, the cityscape around him—not just Kaecilius—begins to reverse slowly. (And unlike in Tibet, the saucer keeps spinning clockwise underneath his hand.) Then the rate of reversal accelerates, and even continues in its reversal after Strange drops his gesture and engages in a fight with Kaecilius, who somehow escapes the reversing time stream to join Strange and Mordo in the “observer” time stream.

So in this mode, the saucer is working much more like a shuttle wheel with no snap-back feature.

A shuttle wheel, as you’ll recall from the first post, doesn’t specify an absolute value along a range like a jog dial does. A shuttle wheel indicates a direction and rate of change. A little to the left is slow reverse. Far to the left is fast reverse. Nearly all of the shuttle wheels we use in the real world have snap-back features, because if you were just going to leave it reversing and pay attention to something else, you might as well use another control to get to the absolute beginning, like a jog dial. But, since Strange is scrubbing an endless “video stream,” (that is, time), and he can pull people and things out of the manipulated-stream and into the observer-stream and do stuff, not having a snap-back makes sense.

For the Tibet mode I argued for a chapter ring to provide some context and information about the range of values he’s scrubbing. So for shuttling along the past in the Hong Kong mode, I don’t think a chapter ring or content overview makes sense, but it would help to know the following.

• The rate of change
• Direction of change
• Shifted datetime
• Timedate difference from when he started

In the scene that information is kind of obvious from the environment, so I can see the argument for not having it. But if he was in some largely-unchanging environment, like a panic room or an underground cave or a Sanctum Sanctorum, knowing that information would save him from letting the shuttle go too far and finding himself in the Ordovician. A “home” button might also help to quickly recover from mistakes. Adding these signals would also help distinguish the two modes. They work differently, so they should look different. As it stands, they look identical.

He still (probably) needs future branches

Can Strange scrub the future this way? We don’t see it in the movie. But if so, we have many of the same questions as the Tibet mode future scrubber: Which timeline are we viewing & how probable is it? What other probabilities exist and how does he compare them? This argues for the addition of the future branches from that design.

Selecting the mode

So how does Strange specify the jog dial or shuttle wheel mode?

One cop-out answer is a mental command from Strange. It’s a cop-out because if the Eye responds to mental commands, this whole design exercise is moot, and we’re here to critique, practice, and learn. Not only that, but physical interfaces are more cinegenic, so better to make a concrete interaction for the film.

You might think we could modify the opening finger-tut (see the animated gif, below). But it turns out we need that for another reason: specifying the center and radius-of-effect.

Center and radius-of-effect

In Tibet, the Eye appears to affect just an apple and a tome. But since we see it affecting a whole area in Hong Kong, let’s presume the Eye affects time in a sphere. For the apple and tome, it was affecting a small sphere that included the table, too, it’s just that table didn’t change in the spans of time we see. So if it works in spheres, how is the center and the radius of the sphere set?

Center

Let’s say the Eye does some simple gaze monitoring to find the salient object at his locus of attention. Then it can center the effect on the thing and automatically set the radius of effect to the thing’s size across likely-to-be scrubbed extents. In Tibet, it’s easy. Apple? Check. Tome? Check. In Hong Kong, he’s focusing on the Sanctum, and its image recognition is smart enough to understand the concept of “this building.”

Radius

But the Hong Kong radius stretches out beyond his line of sight, affecting something with a very vague visual and even conceptual definition, that is, “the wrecked neighborhood.” So auto-setting these variables wouldn’t work without reconceiving the Eye as a general artificial intelligence. That would have some massive repercussions throughout the diegesis, so let’s avoid that.

If it’s a manual control, how does he do it? Watch the animated gif above carefully and see he’s got two steps to the “turn Eye on” tut: opening the eye by making an eye shape, and after the aperture opens, spreading his hands apart, or kind of expanding the Eye. In Tibet that spreading motion is slow and close. In Hong it’s faster and farther. That’s enough evidence to say the spread*speed determines the radius. We run into the scales problem of apple-versus-neighborhood that we had in determining the time extents, but make it logarithmic and add some visual feedback and he should be able to pick arbitrary sizes with precision.

So…back to mode selection

So if we’re committing the “turn on” gesture to specifying the center-and-radius, the only other gesture left is the saucer creation. For a quick reminder, here’s how it works in Tibet.

Since the circle works pretty well for a jog dial, let’s leave this for Tibet mode. A contrasting but related gesture would be to have Strange hold his right hand flat, in a sagittal plane, with the palm facing to his left. (See an illustration, below.) Then he can tilt his hand inside the saucer to reverse or fast forward time, and withdraw his hand from the saucer graphic to leave time moving at the adjusted rate. Let the speed of the saucer indicate speed of change. To map to a clock, tilting to the left would reverse time, and tilting to the right would advance it.

The yank out

There’s one more function we see twice in the Hong Kong scene. Strange is able to pull Mordo and Wong from the reversing time stream by thrusting the saucer toward them. This is a goofy choice of a gesture that makes no semantic sense. It would make much more sense for Strange to keep his saucer hand extended, and use his left hand to pull them from the reversing stream.

Whew.

So one of the nice things about this movie interface, is that while it doesn’t hold up under the close scrutiny of this blog,  the interface to the Eye of Agamotto works while watching the film. Audience sees the apple happen, and gets that gestures + glowing green circle = adjusting time. For that, it works.

That said, we can see improvements that would not affect the script, would not require much more of the actors, and not add too much to post. It could be more consistent and believable.

But we’re not done yet. There’s one other function shown by the Eye of Agamotto when Strange takes it into the Dark Dimension, which is the final mode of the Eye, up next.