Dossier: Motion Bind — Tracking Through Chaos

The Mechanic

Dots appear on screen. Some flash — these are your targets. The flash fades. All dots become identical. They start moving. Your job: track the targets through the motion. When the dots stop, identify which ones were yours.

This is Multiple Object Tracking (MOT), one of the most studied paradigms in cognitive science. Motion Bind is THE VOID's implementation — a 100-level deep dive into the limits of human attentional tracking.

The 7 Tiers

Motion Bind scales primarily through target count. Each tier demands more from your attentional system:

| Tier | Targets | Total Dots | The Challenge | |------|---------|-----------|---------------| | 1 | 1 | 5 | Learn the mechanic. Track 1 through the crowd. | | 2 | 2 | 6 | Split attention. Maintain 2 indexes simultaneously. | | 3 | 3 | 8 | The first real challenge. 3 requires genuine parallel tracking. | | 4 | 4 | 10 | At human average capacity. Most people hold here. | | 5 | 5 | 12 | Above average. Requires strong attentional control. | | 6 | 6 | 14 | Elite territory. Near the biological ceiling. | | 7 | 7 | 16 | Transcendent. Pushing the architecture to its limit. |

Within each tier, 5 block phases (A through E) progressively introduce environmental mechanics.

The Environmental Mechanics

Target count alone would make the game repetitive. Motion Bind layers 3 environmental mechanics that test different aspects of tracking resilience.

Occlusion Zones

Rectangular regions where dots become invisible. A target enters an occlusion zone and disappears. Your tracking index must maintain attachment to an object you cannot see, predicting where it will emerge based on its trajectory before disappearing.

This mechanic directly probes the robustness of your attentional indexes. In Pylyshyn's framework, FINST indexes should persist through brief occlusion — and they do, but with increasing error rates as occlusion duration grows.

Merge Events

2 or more dots converge to the same point, overlap for 300 milliseconds, then split apart with angular deviation from their original trajectories.

During the overlap, targets and distractors are physically indistinguishable. When they split, the trajectories have changed. Your tracking system must maintain identity through the merge — knowing which dot emerging from the overlap was your target and which was the distractor.

This is where most tracking failures occur. The merge event creates a moment of genuine ambiguity that taxes even strong attentional systems.

Checkpoint Flashes

At specific moments during tracking, targets briefly reveal their identity — a momentary flash that confirms whether your tracking is correct. These serve 2 purposes: they allow mid-trial correction of tracking errors, and they increase confidence, which paradoxically can make subsequent tracking more accurate.

The Level Flow

Each level follows a 6-phase sequence:

1. Marking — Targets flash. Memorize which dots are yours.
2. Identity Fade — The flash fades. All dots become identical.
3. Tracking — Dots move. Track your targets through the motion.
4. Freeze — Dots stop. This is your answer window.
5. Recall — Select which dots you believe are the targets. CONFIRM when ready.
6. Reveal — Correct targets illuminate. See how you did.

The tracking phase duration increases with tier — more targets means more time for tracking errors to accumulate. Speed increases progressively within each tier. By the late tiers, dots are moving fast enough that prediction becomes necessary alongside pure tracking.

Scoring

Base points scale with tier and environmental complexity. A correct response in Tier 7 with occlusion zones is worth significantly more than Tier 1 in open space.

Accuracy is partial — if you correctly identify 3 of 4 targets, you get 75% credit, not zero. This matters because near-misses are informative. Tracking 3 of 4 correctly reflects genuine attentional capacity.

Environmental bonus rewards correct responses under occlusion, merge, or checkpoint conditions.

Speed bonus rewards faster CONFIRM responses — indicating higher confidence in your tracking.

Streak bonus builds across consecutive fully-correct rounds.

Why Motion Bind Matters

MOT is not a game mechanic that was designed to be fun. It is a research paradigm that was discovered to be fundamentally human. The attentional tracking system it probes operates below conscious awareness, runs in parallel across multiple targets, and maintains object identity through a continuous temporal stream.

No artificial system replicates this. Computer vision uses frame-by-frame detection and assignment — a fundamentally different architecture that fails under exactly the conditions where human tracking excels: identical objects, proximity events, occlusion.

Motion Bind is THE VOID's purest test of selective tracking. It measures something no other game on the platform measures, something no AI can replicate, and something that improves measurably with practice.