Domain: Humanities and Social Sciences — Business Administration
Target concept: Linear structure: The organizational structure is represented as a vertical single-line diagram, without horizontal functional branches.

Video generation prompt: First, identify the top-level leadership of the organization. Then, sequentially add lower-level positions according to the linear organizational structure, forming a complete chain. The illustration highlights the process of adding these positions and the resulting organizational structure.

Evaluation guide:
Target concept: Linear organizational structure, defined mechanistically as a directed acyclic graph (DAG) with exactly one root (top leader), each non-root node having exactly one parent, and all edges oriented strictly downward along a shared vertical axis, with zero horizontal (same-level) adjacency or branching. Minimum assumptions: (i) Authority is transitive and exclusive; (ii) Position identity is determined solely by rank in chain, not domain; (iii) Visual representation must encode hierarchy via vertical position and edge direction only. Phased storyline: [Phase 1: Blank canvas → CEO appears at top (causal trigger: identification of apex authority); Phase 2: CEO stabilizes → VP enters below with connecting line (causal trigger: delegation to direct report); Phase 3: Repeat for each successive level, maintaining identical spatial and temporal parameters; Phase 4: Final frame displays complete chain + annotation confirming absence of horizontal branches]. Visibility constraints: Must be verifiable in static final frame (grid-aligned verticality, single-line connectivity) and dynamic sequence (strict top-to-bottom emergence order, no concurrency or reversal). Perspective: Frontal, orthographic, no rotation or depth, pure 2D schematic fidelity.

Manual:
I. Basic Demonstration Information
Demonstration Title: Linear Organizational Structure Formation Demonstration
Subject: Humanities and Social Sciences - Business-administration - Organizational Design
Demonstration Purpose: To visually demonstrate how a linear organizational structure is constructed - starting from the top-level leader and sequentially adding subordinate positions in a strict vertical single-line chain - highlighting the absence of horizontal functional branches and reinforcing the principle of unified command.

II. Demonstration Carrier/Equipment
Core Carrier: Animated digital whiteboard interface with clean, vector-based rendering.
Auxiliary Equipment: Synchronized voiceover (or on-screen text prompts), a simple sans-serif font, consistent node styling (rounded rectangle boxes, one solid fill color, white text), thin solid vertical connector lines in a matching dark color, a neutral light gray background.

III. Demonstration Content Description
Layout: Center-aligned vertical canvas. Start with blank screen.
State Control: Each position appears only after its superior is fully stabilized (no overlap, no premature rendering). All animations use the same smooth easing style and duration throughout.
Sequential Flow: (1) CEO appears at top center; (2) After a brief, consistent pause, VP appears directly below CEO, connected by a vertical line; (3) After a similar pause, Director appears below VP, connected; (4) Repeat for Manager and Staff (minimum 5 levels). No labels, icons, or colors denote function - only rank-based titles.

IV. Observation of Core Phenomena
Top-Level Identification: The CEO node is largest in visual weight (slight scale boost plus bold text) and appears first - unmistakably anchoring the chain.
Sequential Addition: Each new node enters only from the top-to-bottom direction, moving straight down the page; no lateral or diagonal movement.
Vertical Single-Line Integrity: All connectors are identical, unbroken, vertical lines - no T-junctions, no branching, no parallel lines. The final structure forms a visibly straight column.
Absence of Horizontal Branches: No visual elements appear beside the central vertical column at any level; no sidebars, no department headers, no dual-reporting indicators.
Visual Verification Features: (i) Vertical alignment that looks consistent by eye, with every node's center falling on the same vertical line as the others; (ii) Cumulative node count matches narration/text ('5-level chain complete'); (iii) An on-screen annotation appears at the end: 'Linear Structure Confirmed: Vertical, Single-Line, Hierarchical'.

V. Summary of Key Knowledge Points and Principles
Core Concept Definition: Linear structure is a hierarchical organizational design where authority flows unidirectionally from top to bottom through a single chain of command - each position reports to exactly one superior, with no cross-functional or lateral reporting.
Principle of Unified Command: Ensures clarity of responsibility, rapid decision-making, and accountability - violated by any horizontal branch or shared supervision.
Why No Functional Branches?: Horizontal groupings (e.g., 'Marketing Team', 'Finance Unit') imply functional specialization and peer coordination, which introduce ambiguity in reporting lines and contradict the linear model's foundational premise.

VI. Demonstration Precautions
Timing Precision: Keep a clear, consistent pause between each position's appearance and the next, with smoothly and similarly paced entrance animations throughout - important for showing the sequential logic clearly.
Labeling Discipline: Titles must reflect rank only (e.g., 'Chief Executive Officer', 'Vice President'), never function (e.g., 'Head of Sales') - this prevents implicit horizontal categorization.
Visual Fidelity: No shadows, gradients, or decorative elements - keeps focus on the structural geometry, not aesthetics.
Final Frame Hold: Keep the completed chart on screen for a couple of seconds with its annotation, so the linearity and completeness can be clearly seen.

Prompt Grounding rubric:
level_1: No organizational chart appears in the video; or if one appears, it includes horizontal branches, side-by-side departments, dual reporting lines, or a matrix layout instead of a single vertical chain; there is no visible top-level leader position and no sense of a chain being built.
level_2: A mostly vertical diagram is present, but positions are not added one at a time - either all nodes appear at once with no build-up, or the top-level leader box is missing or hidden behind another node; at least one lower-level position is shown, but it is placed off to the side, floats unconnected, or is joined to another node by a diagonal or horizontal line rather than a vertical one.
level_3: A top-level leader box is clearly shown at the top of the chart, and two or three lower-level positions (for example CEO, then a Vice President, then a Director) are added one after another going downward in the correct order; however, at least one connecting line is missing, faint, or oddly spaced, and there is no visible cue (such as a pause, highlight, or fade-in) marking the order positions were added, even though no horizontal branch appears.
level_4: A complete vertical chain of at least four levels (for example CEO, then Vice President, then Director, then Manager) forms with the correct top-down order and an unbroken vertical line connecting each level; every box is labeled and lines up under the one above it; positions clearly appear one at a time from top to bottom with a noticeable pause between each; one minor flaw remains, such as a label in a different font from the rest, a box that sits slightly off the vertical line the others follow, or no on-screen label naming the structure as linear.
level_5: The top-level leader box appears first and sits centered at the top of the frame; each subsequent position (Vice President, Director, Manager, Staff) then appears in strict top-to-bottom order, each fading or sliding smoothly into place below the previous one with a clear, consistent pause between additions; every box shares the same shape, size, color, and font, joined only by plain straight vertical lines with no curves, arrows, or extra connectors; no element ever appears beside another at the same level, and no sidebar, department grouping, or dotted line is shown; the final frame holds on a complete, centered vertical chain, optionally with an on-screen label identifying it as a linear structure.

Scientific and Causal Correctness rubric:
level_1: The chart directly contradicts a linear structure: it shows functional divisions side by side (for example a 'Marketing' box next to a 'Finance' box), a position reporting to two different superiors at once, or a circular reporting loop; positions appear with no logical trigger - for example a subordinate position appears before its superior exists, or the order of appearance is random.
level_2: The structure is mostly vertical but contains at least one delegation-logic error: for example a support or advisory role is shown at the same authority level as a line supervisor without being subordinate to anyone, or a position appears with no indication of who it reports to; the order in which positions are introduced does not follow the chain of command (for example a Staff-level position appears before the Manager it should report to).
level_3: The chain of authority is mostly logical - the top leader's appearance is followed by its direct subordinate, and so on down the chain - but at least one step breaks the delegation logic, such as a position appearing with no visible link to its superior, or a label implying a functional specialty (for example 'Head of IT') sitting at the same level as another functional label, suggesting peer coordination rather than single-line authority.
level_4: Each new position appears only after the position above it in the chain is fully shown, correctly reflecting that authority is delegated downward one step at a time; every position's label denotes a rank in the chain (for example Vice President, Director, Manager) rather than a function or department, so no two positions read as functional peers; the overall order of appearance matches a single, unbroken chain of command with no ambiguity about who reports to whom.
level_5: The sequence of appearance faithfully enacts delegation: the top leader appears first, and each subordinate appears only once its direct superior is settled in place, reinforcing that each position derives its authority from exactly one superior above it; no position's label or placement implies a peer relationship, dual reporting, or functional grouping at any point; the finished chain reads unambiguously as a single line of command from top to bottom, consistent with the principle that unified command requires exactly one reporting line per position.

Spatiotemporal Consistency rubric:
level_1: Position boxes jump to different locations on screen with no visible motion between frames; a connecting line is drawn from bottom to top instead of top to bottom; a box disappears and a different one appears in its place; the timeline breaks down, for instance a lower-level box appears, then vanishes, then an upper-level box appears out of order.
level_2: The column of boxes does not stay aligned - later boxes are visibly offset to one side compared to earlier ones, or the vertical space between one pair of boxes is clearly much larger or smaller than between another pair with no reason; connecting lines flicker or redraw partway through the animation; two or more boxes animate at the same time with mismatched motion (for instance one box slides in while another simultaneously drifts sideways).
level_3: The column of boxes stays aligned along the same vertical line for the whole video, and the spacing between levels looks even and consistent; connecting lines are drawn once and stay in place afterward; each box's entrance happens in the correct top-to-bottom order, though the motion itself may look abrupt (snapping into place rather than sliding or fading), and occasional slight jitter during a transition does not confuse which box belongs where.
level_4: The boxes stay tightly aligned along one vertical line for the entire video, with even, consistent spacing between every pair of adjacent levels; every connecting line is drawn smoothly and quickly right as the box below appears; each box enters with the same smooth motion style and a similar, noticeably brief pause before the next one begins; there is no jitter, no overlapping boxes, and nothing is ever blocked from view.
level_5: The vertical column and its spacing stay perfectly consistent from the first frame to the last, with every box appearing to sit exactly under the one above it; each connecting line is drawn at the same moment the box below it is descending into place, rather than before or after; the whole sequence proceeds in one direction only - no position ever re-animates, holds mid-motion, or speeds up or slows down erratically - with a clearly perceptible, consistent pause between one box settling and the next beginning; the completed chart holds still on screen long enough at the end to be clearly read in full.