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Key Takeaways

1. Understanding is the process of changing unfamiliar situations into familiar ones

Understanding is thinking.

Adapting to the unknown. Understanding is a powerful process that allows humans to multiply their knowledge by converting new situations into familiar ones. This enables us to know what to do about them without having to develop new responses through first-hand learning or rely on second-hand learning. The process involves changing an unfamiliar situation into a familiar one through thinking, which is essentially moving from one idea to another until the unfamiliar situation resembles or is derived from familiar situations.

Three basic know-all processes:

  • Instinct: Fixed, pre-wired reactions to specific situations
  • Learning: Developing responses to new situations through trial and error or second-hand information
  • Understanding: Converting unfamiliar situations into familiar ones through thinking

Understanding has several advantages, including:

  • Allowing us to multiply learning by using old responses in new situations
  • Enabling us to explain new situations to others so they can choose their own responses
  • Providing a basis for reaction and prediction in various scenarios

2. The mind uses five levels of understanding to explain unknown phenomena

It is impossible to say nothing at all if one says something.

Levels of explanation. The human mind employs five distinct levels of understanding when attempting to explain unfamiliar phenomena. These levels range from simple descriptions to full details, each serving a specific purpose in the process of comprehension.

The five levels of understanding are:

  1. Simple description: Basic statement of what happened
  2. Porridge words: Use of vague, meaningless words to indicate a reason
  3. Give it a name: Identifying and naming the process involved
  4. The way it works: Describing the cause-and-effect relationship
  5. Full details: Providing comprehensive explanations or drawings

Each level of understanding has its own advantages and limitations. For example, simple descriptions commit the viewer to a definite point of view, while porridge words allow for vague questions and explanations when specific information is lacking. Naming the process provides a sense of control, and describing how it works offers a more in-depth understanding. Full details provide the most comprehensive explanation but may not always be necessary or practical.

3. Four ways to be right: emotional, logical, unique, and recognition rightness

Being right is the feeling of being right because this is what one acts upon.

Types of rightness. The human mind uses four distinct ways to determine if its thinking is "right" enough for action or for imposing on others. These four ways of being right are emotional rightness, logical rightness, unique rightness, and recognition rightness.

The four ways to be right:

  1. Emotional rightness (currant cake): When a line of thought triggers emotions we are happy to have about something
  2. Logical rightness (jig-saw puzzle): When ideas fit together properly in a logical sequence
  3. Unique rightness (village Venus): When an explanation is the only one that fits the available facts
  4. Recognition rightness (measles): When a situation is recognized based on familiar patterns or features

Each type of rightness has its own strengths and limitations. Emotional rightness can be powerful but may lead to short-term thinking. Logical rightness is useful for building complex systems but can lead to arrogance. Unique rightness can provide confidence but may prevent the consideration of alternative explanations. Recognition rightness is practical but can lead to misdiagnoses if not all features are considered.

4. The YES/NO system is our most important thinking tool, but it has limitations

The arrogance of righteousness which is probably the most dangerous fault of human thinking arises directly from the YES/NO system.

Powerful but flawed. The YES/NO system is our most crucial thinking tool, providing a powerful rejection and selection mechanism. However, it also has significant limitations that can hinder effective thinking and decision-making.

Limitations of the YES/NO system:

  • Adequate is good enough: Once an adequate solution is found, there's no push to find better ones
  • Permanent labels: Ideas rejected by NO may be permanently labeled as impossible, even when circumstances change
  • Sharp polarization: Creates a very sharp divide between what is rejected and accepted, leaving little room for nuance
  • Arrogance of righteousness: Leads to a belief in absolute rightness and the need to impose ideas on others

The YES/NO system's limitations can be particularly problematic in complex situations where nuanced thinking is required. To overcome these limitations, it's essential to develop complementary thinking tools and approaches, such as lateral thinking and the use of intermediate impossibles, which allow for more flexible and creative problem-solving.

5. Creativity involves escaping old ideas and generating new ones

This unreasonable dissatisfaction is the basis of the creative attitude.

Breaking free from conventions. Creativity is the process of changing ideas or producing additional new ones. It involves two main aspects: escaping from old ideas and generating new ones. This process is crucial for innovation and problem-solving, as it allows us to break free from established patterns of thinking and explore new possibilities.

Key aspects of creativity:

  • Dissatisfaction with current ideas, even when they seem adequate
  • Willingness to make mistakes and use them as stepping stones to new ideas
  • Balance between knowledge and openness to new perspectives
  • Use of techniques and methods to increase chances of creativity

Creativity can be hindered by:

  • Satisfaction with adequate solutions
  • Too much or too little knowledge in a specific field
  • Fear of being wrong or making mistakes
  • Lack of time or appropriate techniques for idea generation

To foster creativity, it's important to cultivate an attitude of constructive dissatisfaction, embrace mistakes as learning opportunities, and develop techniques for generating and exploring new ideas. This approach can lead to innovative solutions and breakthroughs in various fields.

6. Imagination increases thinking fluency but doesn't guarantee correctness

Imagination increases the fluency of the basic thinking processes but does not by itself make them more correct or more useful.

Enhanced idea flow. Imagination plays a crucial role in thinking by increasing the fluency of basic thinking processes. It allows for a greater range of ideas and alternatives to be considered. However, it's important to note that imagination alone does not guarantee the correctness or usefulness of the ideas generated.

Four aspects of imagination:

  1. Picture vividness: Ability to imagine scenes or objects with great detail
  2. Number of alternatives: Capacity to generate multiple options or ideas
  3. Different ways of looking at something: Ability to consider various perspectives
  4. Creative imagination: Combining ideas to create new experiences

Benefits of imagination in thinking:

  • Reduces reliance on unique rightness by considering alternative explanations
  • Enhances the carry-on and connect-up processes of thinking
  • Provides a wider range of starting points and destinations for idea connections
  • Serves as an ingredient for creativity, though not sufficient on its own

While imagination is valuable for generating ideas and exploring possibilities, it must be combined with critical thinking, knowledge, and evaluation to produce truly useful and correct ideas. The key is to harness the power of imagination while maintaining a balance with practical considerations and logical assessment.

7. Attention and clues play a crucial role in shaping our understanding

If you cannot imagine any alternative explanations then it is easy to be convinced that the only one you have is absolutely right.

Selective focus shapes perception. The choice of attention area is fundamental to thinking, as it determines the action or thinking that follows. We react only to a selected part of the world around us, and this selection process significantly influences our understanding and interpretation of situations.

Key aspects of attention and clues:

  • Carving out areas of attention in space, time, and depth
  • Different attention areas can lead to different interpretations of seemingly similar situations
  • Clues can suggest ideas, confirm them, or exclude alternative explanations
  • The interplay between clues and ideas forms a continuous shuttle in the thinking process

Types of clues:

  1. Obvious to everyone
  2. Features that become clues when significance is attached
  3. Clues that require effort to uncover

The danger in this process lies in the tendency to notice only those clues that fit with preconceived ideas, potentially leading to confirmation bias. To mitigate this risk, it's important to actively seek out diverse clues and consider alternative explanations, even when an initial idea seems satisfactory.

8. Think-2: A new approach to resolving disagreements by mapping starting points

No matter how excellent the thinking itself may be, if the starting place is different the conclusion will be different.

Mapping thought landscapes. Think-2 is a novel approach to resolving disagreements by focusing on the starting points of different perspectives rather than engaging in traditional argument. This method recognizes that many disagreements stem from different starting places rather than flaws in the thinking process itself.

Key aspects of Think-2:

  • Carefully mapping out the landscape of each person's starting point
  • Identifying areas of overlap and distance between perspectives
  • Attempting to create new areas that include otherwise separate viewpoints
  • Focusing on understanding where people are coming from rather than trying to convince them of a particular position

Benefits of the Think-2 approach:

  • Reveals hidden factors that may dominate arguments without being explicitly mentioned
  • Allows for a more comprehensive understanding of different perspectives
  • Facilitates more productive discussions by addressing underlying differences
  • Helps identify common ground and potential areas for compromise

By employing Think-2, individuals and groups can move beyond surface-level disagreements and engage in more meaningful dialogue. This approach can be particularly valuable in complex situations involving multiple stakeholders or conflicting viewpoints, such as labor disputes, family conflicts, or policy debates.

Last updated:

FAQ

1. What is "Practical Thinking" by Edward de Bono about?

  • Everyday thinking focus: The book explores how people actually think in daily life, rather than how philosophers or logicians believe they should think.
  • Black Cylinder Experiment: De Bono uses his famous Black Cylinder Experiment to analyze real-world thinking processes and mistakes.
  • Four ways to be right: The book introduces four practical ways people feel "right" in their thinking, such as emotional and logical rightness.
  • Five ways to be wrong: It also identifies five major mistakes in thinking, showing how errors are a natural part of the mind’s operation.
  • Practical skill, not talent: De Bono argues that thinking is a skill to be developed, not an inborn gift, and provides tools to improve it.

2. Why should I read "Practical Thinking" by Edward de Bono?

  • Improve everyday decisions: The book helps readers recognize and avoid common thinking errors in daily life, from work to relationships.
  • Understand your own mind: It offers insight into how your mind works, making your thought processes more visible and manageable.
  • Actionable thinking tools: De Bono provides practical frameworks and terminology (like "porridge words" and "black boxes") to discuss and improve thinking.
  • Boost creativity and problem-solving: The book encourages creative, flexible thinking and shows how to generate alternatives and new ideas.
  • Challenge arrogance and rigidity: It warns against the dangers of certainty and arrogance, promoting open-mindedness and continuous improvement.

3. What are the key takeaways from "Practical Thinking" by Edward de Bono?

  • Thinking is a skill: Anyone can improve their thinking by understanding and practicing specific processes, not just relying on intelligence or education.
  • Four ways to be right: Emotional, logical, unique, and recognition rightness are the main ways people feel correct in their thinking.
  • Five ways to be wrong: Monorail, magnitude, misfit, must-be, and miss-out mistakes are common and arise naturally from how the mind works.
  • Use of "porridge words" and "black boxes": Vague terms and incomplete understanding are not just ignorance—they are essential tools for moving thinking forward.
  • Importance of humility: Recognizing the limits of your own rightness and being open to alternatives is crucial for better thinking and decision-making.

4. How does Edward de Bono define the four ways to be right in "Practical Thinking"?

  • Emotional rightness (currant cake): Feeling right because an idea matches your emotions or values, often triggered by "goody-goody" words.
  • Logical rightness (jig-saw puzzle): Assembling ideas so they fit together logically, regardless of whether the starting assumptions are correct.
  • Unique rightness (village Venus): Believing an explanation is right simply because you can’t imagine an alternative—certainty from lack of imagination.
  • Recognition rightness (measles): Feeling right because a situation matches a familiar pattern or diagnosis, allowing for immediate action.

5. What are the five major mistakes in thinking according to "Practical Thinking" by Edward de Bono?

  • Monorail mistake: Moving directly from one idea to another without considering other factors or necessary conditions.
  • Magnitude mistake: Getting the size or scale of an effect wrong, even if the direction of thinking is correct.
  • Misfit mistake: Jumping to conclusions that don’t actually fit the available facts or evidence.
  • Must-be mistake (arrogance): Fixating on an idea with certainty, shutting out alternatives and stopping further development.
  • Miss-out mistake: Drawing conclusions from only part of a situation and applying them to the whole, often due to selective attention.

6. What is the Black Cylinder Experiment and how does it illustrate thinking in "Practical Thinking"?

  • Simple unexplained event: Participants are asked to explain why a black cylinder falls over, with minimal information and no chance to investigate.
  • Raw thinking exposed: The experiment reveals how people generate explanations with limited data, mirroring real-life situations.
  • Levels of understanding: Responses illustrate the five levels of explanation, from simple description to full technical detail.
  • Common thinking errors: The experiment highlights the prevalence of the five major mistakes in thinking, even among highly educated people.
  • Process over content: It shows that the way people think is more important than the specific subject matter they’re considering.

7. What are the five levels of understanding or explanation in "Practical Thinking" by Edward de Bono?

  • L–1: Simple description—Just stating what happened, with no explanation.
  • L–2: Porridge words—Using vague terms like "mechanism" or "device" without specifics.
  • L–3: Give it a name—Identifying a process or cause by name (e.g., "gravity," "magic") without details.
  • L–4: The way it works—Describing the general process or cause-and-effect, but not the specific mechanism.
  • L–5: Full details—Providing a detailed, step-by-step explanation or model of what happened.

8. How does Edward de Bono describe the basic thinking processes in "Practical Thinking"?

  • Carry-on: Continuing along a familiar pattern or sequence of ideas, based on memory or habit.
  • Connect-up: Deliberately linking two separate ideas or filling in gaps, often by asking questions or setting goals.
  • Movement between ideas: Thinking is seen as moving from one idea to another, either passively (carry-on) or actively (connect-up).
  • Use of porridge words: Vague terms help keep thinking moving when specifics are lacking, acting as bridges or placeholders.
  • Importance of questions: Setting up a destination (even a vague one) allows for purposeful connection and problem-solving.

9. What are "porridge words" and "black boxes" in "Practical Thinking," and why are they important?

  • Porridge words: Vague, formless terms (like "mechanism," "thing," "device") that allow thinking to proceed when specifics are unknown.
  • Black boxes: Systems or processes that are used effectively without understanding their internal workings—focus is on input and output.
  • Tools for ignorance: Both concepts let people act and think effectively despite incomplete knowledge, enabling progress and action.
  • Cross-links and flexibility: Porridge words create connections between ideas, preventing thinking from getting stuck or too rigid.
  • Leap-frogging detail: These tools allow people to "jump over" areas of ignorance and keep moving toward solutions.

10. How does "Practical Thinking" by Edward de Bono address creativity, imagination, and insight?

  • Creativity as lateral movement: Creativity is defined as moving sideways to generate new ideas, not just following logical sequences.
  • Imagination’s four aspects: Includes vivid mental imagery, generating alternatives, seeing things differently, and creative fantasy.
  • Insight and discontinuity: Insight involves a sudden switch to a new way of seeing things, often breaking from established patterns.
  • Role of mistakes: Being wrong or using "intermediate impossibles" can be essential steps toward creative breakthroughs.
  • PO as a tool: De Bono introduces "PO" as a word to provoke new thinking and escape the rigidity of the YES/NO system.

11. What is the YES/NO system in "Practical Thinking," and what are its limitations?

  • Basis of thinking: The YES/NO system is the main tool for accepting or rejecting ideas, leading to sharp polarization and quick decisions.
  • Practical advantages: It provides speed, decisiveness, and clarity in thinking and action.
  • Limitations: It encourages stopping at "good enough" answers, creates permanent labels, and fosters arrogance and rigidity.
  • Dangers of certainty: The system can lead to the "arrogance of righteousness," where people become closed to alternatives or improvement.
  • Need for alternatives: De Bono advocates for tools like "PO" and humor to break out of the YES/NO trap and encourage creative, flexible thinking.

12. What are the best quotes from "Practical Thinking" by Edward de Bono and what do they mean?

  • "Everyone is always right. No one is ever right." — Each person’s thinking is right in their own context, but absolute rightness is unattainable; humility and openness are essential.
  • "Proof is often no more than lack of imagination in providing an alternative explanation." — Certainty often comes from not being able to think of other possibilities, not from true correctness.
  • "An idea can never make the best use of available information." — Because ideas develop over time, they are always limited by the sequence and amount of information available when formed.
  • "The sharp-brained outlook can never establish new ideas because it does not mess around, never makes mistakes, and is completely trapped by existing ideas." — Creativity requires flexibility, mistakes, and the willingness to explore beyond established patterns.
  • "Just as black boxes allow us to use a mechanism without really knowing how it works so porridge words allow us to make definite statements or ask definite questions when we do not really know what we are talking about." — Both concepts are essential for practical thinking and progress, even in the face of ignorance.

Review Summary

3.77 out of 5
Average of 100+ ratings from Goodreads and Amazon.

Practical Thinking receives mixed reviews, with an average rating of 3.76/5. Readers appreciate de Bono's insights on decision-making, understanding, and thinking processes. Many find the book's ideas valuable and thought-provoking, particularly the concepts of "ways to be right/wrong" and "levels of understanding." Some readers note similarities to de Bono's other works but still find value in the different perspectives offered. Critics mention issues with readability, repetitiveness, and outdated language. Overall, the book is seen as a useful guide for improving practical thinking skills.

Your rating:
4.35
29 ratings

About the Author

Edward de Bono was a renowned Maltese thinker and author who made significant contributions to the field of creative thinking. He is best known for coining the term "lateral thinking" and advocating for the explicit teaching of thinking skills in schools. De Bono's work focused on developing structured approaches to creativity and problem-solving. As a physician, author, inventor, and consultant, he applied his ideas across various domains. His numerous books and programs have influenced education, business, and personal development worldwide. De Bono's methods emphasize breaking traditional thinking patterns to generate innovative solutions and ideas.

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