Chapter 6: Imposing Logical Order
tpp pyramid-principle logical-order mece time-order structural-order degree-order hard-headed-thinking
Status: Notes complete
Overview
Chapter 6 establishes the second rule of the Minto Pyramid Principle: ideas in any grouping must be in logical order. Logical order is not merely a presentation technique — it is a thinking tool. When you cannot find a valid order for a grouping, that is a signal that the grouping itself is flawed: the ideas may not all belong together, or some may be missing.
The chapter teaches that the mind can perform only three analytical activities when creating groupings: (1) determining the causes of an effect, (2) dividing a whole into its parts, and (3) classifying like things together. Each activity dictates a corresponding order — time order, structural order, or degree order. These three orders are the backbone of any valid inductive grouping, and deliberate application of them allows the writer to catch faulty logic and fill gaps in thinking.
The chapter works through detailed examples for each ordering type, showing how to diagnose problems in real-world lists and rebuild them into properly structured groupings. This diagnostic process — called “Hard-Headed Thinking” — is central to Part 2 of the book.
Core Concepts
Logical Order (Second Rule): Ideas in any grouping must be arranged in a logical order that reflects the analytical activity used to create the grouping. If no order can be found, the grouping is flawed.
Three Analytical Activities: The only ways the mind can create a grouping of ideas — determining causes of an effect, dividing a whole into its parts, and classifying like things. Each maps to one of three orders.
MECE: Mutually Exclusive, Collectively Exhaustive. The standard a structural division must meet: no overlaps, nothing left out.
Hard-Headed Thinking: Minto’s term for the overall process of critically examining groupings to find their internal logic — a two-step process covered in Chapters 6 and 7 together.
Intellectually Blank Assertion: A summary statement that merely names the type of point to follow (“The company has three problems”) rather than stating an insight. Avoided by properly applying logical order and summarization.
Exhibit 23: The Three Analytical Activities and Their Orders
Exhibit 23 diagrams the relationship between analytical source and required order:
| Analytical Activity | Example Structure | Resulting Order |
|---|---|---|
| 1. Determine causes of an effect | Effect → Cause 1, Cause 2, Cause 3 | Time Order |
| 2. Divide a whole into its parts | XYZ Company → Division A, B, C | Structural Order |
| 3. Classify like things together | Universe of problems → These 3, All others | Degree Order |
Key principle: One of these three orders must always be present in a valid grouping. Their absence instantly signals something is wrong.
Time Order
What It Is
Time order reflects the steps a person must take to achieve a particular effect, in the sequence they must be taken — one, two, three. The grouping represents a process or system. The summary of any time-ordered grouping is always the effect of carrying out all the actions.
The ideas in such a grouping can be:
- Actual steps or action recommendations
- Conclusions drawn with an underlying process in mind
Distinguishing Cause from Effect
The most common error in time-ordered lists is failing to distinguish cause from effect. In complex processes, there are multiple levels — some steps create conditions that enable other steps. When these levels are mixed, the list becomes confused.
Diagnostic technique: Visualize yourself actually taking each action. Ask: must I take action A before I can take action B, or must I take A in order to achieve B? If the latter, B is an effect and belongs at a higher level.
Example — A consultant’s 8-step productivity improvement plan was actually three nested mini-processes:
- Determine critical functions (steps 1-3)
- Identify weaknesses (steps 4-6)
- Recommend changes (step 7-8… restructured as 3)
The restructured version makes MECE checking possible: are these the only steps needed to identify productivity improvement opportunities?
Practical rule: limit groupings to 4-5 items
Minto recommends keeping groupings to no more than four or five points. If a grouping has more, some items are likely at a different level of abstraction and should be sub-grouped.
Revealing the Underlying Process
When conclusions rather than actions are listed, they often allude to a process rather than stating it. Forcing the list back to its process source clarifies the real message and reveals what has been omitted.
Example — “Business definition” list of 4 conclusions → when re-ordered as a time process:
- Identify market segments
- Assess competitive position in each
- Track changes over time
This reframing exposes the underlying process and permits completeness checking.
Investment Evaluation Example
A 3-point list (“Is technically unsound / Rests on simplistic concepts / Results in misleading prescriptions”) was reordered once time order was recognized: the misleading prescriptions are the effect of the other two causes. Visualizing the underlying 3-step process (Establish concept → Develop technique → Apply technique) also revealed a missing comment on the third step.
Structural Order
What It Is
Structural order reflects what you see once you have visualized something — either by diagram, map, drawing, or photograph. The “something” can be real or conceptual, an object or a process. It must have been properly divided to show its parts.
Creating a Structure (MECE)
When dividing a whole into its parts, the pieces must be:
- Mutually exclusive of each other (no overlaps)
- Collectively exhaustive in terms of the whole (nothing left out)
Minto abbreviates this as MECE. Exhibit 24 shows an org chart of Akron Tire and Rubber Company as a perfect example: Tire, Housewares, and Sports Equipment divisions are MECE with respect to the whole company.
Three Ways to Divide an Organization
When creating an organizational structure, the principle of division determines the ordering:
| Division Principle | Resulting Order |
|---|---|
| By activities (research, marketing, production) | Time order (they form a process) |
| By location (Eastern Region, Midwest, West) | Structural order (reflecting geography) |
| By product/market (Tires, Housewares) | Degree order (classified by sales volume, investment size, etc.) |
Describing a Structure
Once a structure exists, it can be described:
- Top-down, left-to-right: standard for technical descriptions of machinery
- Process order imposed on structure: the order a reader/viewer would follow when examining the structure (e.g., the Sinai Peninsula map example — author listed “contexts” in the order the eye would sweep around the map clockwise)
Recommending Changes to a Structure
When writing to recommend structural changes, the order of recommendations should reflect the order in which you would draw the new structure on a blank sheet of paper for the reader — building it piece by piece. Example: recommending consolidation of a city’s 25 departments/23 committees into 6 departments/6 committees:
- Assign responsibility for services to 6 committees
- Group departments to match committees
- Structure internal services (General Purposes, Personnel)
- Appoint Chief Executive
Using Structural Order to Clarify Thinking
Structural order is a powerful diagnostic tool. Example: a transport department’s list of 5 project objectives. By identifying the underlying structural model of road-building activities (Design → Construct → Operate → Maintain), the analyst could reorganize the objectives, spot which ones belonged together, and identify the real objective of the assignment: “Determine whether the Department is properly organized and managed to carry out its four activities.”
The Plastic Bottle Example (Complex Application)
An 11-point list of risks against a plastic bottle venture looked chaotic until structural order was imposed via a standard ROI tree:
- ROI = Profits / Investment = (Sales × Margins) / Investment
- Points mapped to: ROI impact tree and Share Price/EPS tree
Two distinct messages emerged:
- The project would have a negative impact on ROI
- The project would have a negative impact on EPS
Plus two residual points: borrowing risk and nonreturnable bottle ban. Full message: “Think carefully — if there is a ban, we may be precluded; even without it, it would dilute profitability (short-term EPS, long-term ROI).”
The key lesson: you cannot tell that nonsense is being written unless you first impose a structure on it. Only then do flaws and omissions become visible.
Degree Order
What It Is
Degree order (also called order of importance, comparative order) is imposed when a grouping brings together things classified as alike because they share a characteristic in common — e.g., three problems, four reasons, five variables.
When classifying, the mind creates a bifurcate structure: from the universe of all possible items, it separates those possessing the shared characteristic from all others (Exhibit 25). The two classes formed are by definition collectively exhaustive and meant to be mutually exclusive.
Items are then ranked in the order to which they possess the classifying characteristic, presenting the strongest first (though in some stylistic cases, building to the strongest for dramatic effect is acceptable).
Creating Proper Class Groupings
To prove class groupings are mutually exclusive: define the characteristic quite specifically, then search your knowledge to make sure all known items with that characteristic are included. Rank them by degree of possession of the characteristic.
Example: “Telecom’s billing system should be designed to be broadly useful” → 3 criteria ranked: customer needs (most important) → internal management → outside regulations. The order implies a value judgment.
Degree Order Is Less Common
In business writing, degree order is much less common than time or structural order. Classification happens constantly — but business points that are truly “classified as alike only by virtue of a shared characteristic” (with no underlying process or structure) are rarer than people think.
Identifying Improper Class Groupings
The key diagnostic technique for a supposed class grouping:
- Identify the type of point being made in each item
- Group together those of the same type
- Look for the order the set of groups implies
When you do this, what looked like a degree-ordered class grouping often reveals an underlying process (dictating time order) or structural division. Re-ordering accordingly gives a cleaner, more defensible grouping and a more insightful summary.
Investment evaluation example: 4 “misleading prescriptions” → when reworded as results and re-examined, 3 of the 4 form a decision-making process → time order → clearer summary point about resource allocation decisions.
Sales/inventory system example (from Part 2 intro): 8 complaints about reports → sorted by type of problem → 3 categories (Bad timing, Poor data, Unhelpful format) → order depends on which process question you are answering:
- “Why does the system produce a useless report?” → causes in production order
- “Why do buyers hate it?” → user experience order
- “How do we fix the problem?” → fix in reverse production order
New York decline example: 8 causes → sorted into 3 types (High Costs, Unsuitability of area, Alternative choices) → summary: “The causes of New York’s decline are easy to trace” with 3 clearly ranked points.
Summary: How to Apply Logical Order
When reviewing any grouping of inductive ideas:
- Run your eye quickly down the list — do you find an order (time, structure, degree)?
- If not, identify the source of the grouping (process, structure, or class) and impose one
- If the list is long, see if similarities allow you to make subgroupings, and impose order on those
- Once the grouping is known to be valid and complete, you are ready to draw the logical inference (Chapter 7)
Key Takeaways
- The logical order of a grouping must reflect the analytical activity that created it — time, structural, or degree order. One of these three must always be present.
- If you cannot find a logical order in a grouping, the grouping is flawed — ideas are either mixed from different levels, missing, or falsely classified.
- Time order means listing steps in the sequence they must be performed; the summary is always the effect of carrying out those steps.
- The biggest error in time-ordered lists is mixing causes with effects — steps at different levels of abstraction are presented as if they are peers.
- Structural order reflects a visualized structure (org chart, diagram, map); the parts must be MECE.
- MECE — Mutually Exclusive, Collectively Exhaustive — is the essential test for any structural division. No overlaps; nothing left out.
- Degree order applies when items are classified as alike by a shared characteristic; rank from strongest to weakest (usually).
- Imposing a known structure (like an ROI tree) onto a chaotic list is a powerful technique for revealing the real message and spotting omissions.
- You cannot tell that nonsense is being written unless you first impose a structure on it — structure reveals flaws.
- The three-step process for degree groupings: identify the type of each point, group same types, look for the order the grouped types imply.
Related Chapters
- ch05-deduction-and-induction — Establishes why inductive groupings need logical order (deductive groupings have built-in order from the argument structure)
- ch07-summarizing-grouped-ideas — Once logical order is confirmed, derive the summary insight from the properly ordered grouping
- ch01-the-pyramid-principle — The overall framework within which both rules (grouping and ordering) operate