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Mental Models

Analogies

An analogy transfers relationships or processes from a familiar situation to a problem. It can generate ideas or clarify an abstract concept. Check which features correspond and test the resulting ideas against the real situation.

THE IDEA

Analogies 16

An analogy transfers relationships or processes from a familiar situation to an unfamiliar problem. In lateral thinking, it helps generate ideas; in logical analysis, it can make an abstract relationship easier to inspect. The correspondence is partial, so check what carries over and what does not.

Movement and the two problems of lateral thinking

Lateral thinking faces two obstacles. The first is getting started—generating any train of thought at all. The second is escaping the obvious, cliché path that the mind naturally follows. Analogy is a direct response to both. By translating a problem into a different, self-contained story, we borrow that story’s momentum. The analogy has a “life” of its own: objects interact, processes unfold, and relationships shift over time. That life becomes a source of movement when the problem seems stuck.

A simple analogy carries all it needs. Consider boiling an egg. An egg is placed in a container, covered with water, and heated. The water conducts the heat and also caps the temperature, preventing the egg from burning. Over time the egg’s nature changes, and the degree of change depends on how long it stays in that special environment. Different people have strong preferences about the final state. The story can be told in terms of eggs and saucepans, or it can be abstracted to “an object subjected to controlled conditions changes progressively with time.” Either way, the movement—the process—is what matters. The butterfly collector provides another ready analogy, containing processes of search, rarity, classification, supply and demand, and the tension between beauty and interference with nature. Such stories are compact but rich in transferable dynamics.

Developing the analogy in parallel with the problem

The technique is to develop the analogy alongside the real problem, step by step. At each stage, what happens in the analogy is translated back as a process or a relationship. This is not the mathematical method of temporarily converting a problem into symbols, performing operations while ignoring the symbols’ meaning, and then translating the result back—though the spirit is similar. More often it is more fruitful to advance both lines at once, letting the analogy force questions about the problem as it unfolds.

Take the spread of a rumour. We might choose the analogy of a snowball rolling downhill. As the snowball moves, it grows larger (the rumour gets stronger). The bigger it becomes, the more fresh snow it picks up (the more people know the rumour, the more they pass it on). But immediately the analogy demands precision: is the snowball’s size the number of people who hear the rumour, or the rumour’s intensity? And does the snow on the ground represent all possible receivers, or only those predisposed to believe? The analogy pushes us to look harder at the original situation. It may also suggest consequences: a large snowball can become an avalanche—destructive, but if forewarned one might get out of the way. A destructive rumour similarly raises questions of whether to escape it, stop it, or divert it.

The snowball supplies questions and possible developments. Whether those developments occur in a rumour requires evidence about how people actually hear, believe and repeat it.

Analogies, abstraction, and the risk of distortion

In logical thought, analogies perform a similar bridging role. Abstraction takes us into a world of concepts where logic works cleanly. But the abstract world is not the real world; it is a simplified map. When we use an analogy to move between the two, something is always lost or distorted. The concrete details of the boiled egg do not perfectly match the abstract idea of “subjecting an object to controlled conditions.” The snowball can only illuminate rumour dynamics up to a point: a rumour does not literally obey gravity, and the “snow” of human belief is far less uniform than a blanket of white.

Lateral thinking uses the analogy to generate possibilities for later assessment. An argument by analogy can also support a tentative inference, provided the similarities are relevant and important differences are considered. It does not provide a deductive proof that the unfamiliar case must behave like the familiar one.

Choosing and using analogies

An effective analogy does not need to be elaborate. A brief activity or a miniature story is enough so long as it has a clear internal development—something changes, a process runs, or a relationship evolves. The analogy must be familiar enough that its development can be followed without effort, freeing the mind to focus on the problem it is meant to illuminate.

After developing the analogy, list the ideas it produced and check them against the original problem. Keep the useful correspondences and discard those that do not fit.

When to use it

  • Teaching new concepts by relating them to familiar experiences (e.g., explaining electricity as water flowing through pipes).

  • Persuading others in debates by highlighting similarities between two situations.

  • Using a simple comparison, such as an atom with a solar system, to introduce a concept while identifying the features the analogy cannot explain.

  • Identifying false analogies in political or advertising rhetoric to avoid manipulation.

  • Use an analogy from nature (e.g., a forest ecosystem) to generate ideas for improving organizational teamwork.

  • When stuck on a design problem, translate the problem into a simple cooking recipe analogy to explore alternative steps and ingredients.

  • In education, teach complex concepts by first presenting a familiar story or process as an analogy, then drawing parallels to the new subject.

FROM THEORY TO EVERYDAY LIFE

In practice

01

Map and Territory

A map is an abstraction of a territory; it simplifies and highlights relevant features. Similarly, an analogy uses an abstract model to illuminate a real-world situation, but just as a map can be outdated or inaccurate, an analogy can mislead if the abstraction is poorly chosen.

02

Legal Precedent

In court, lawyers often argue by analogy, comparing a current case to a past precedent. The reasoning assumes that similar legal principles apply, but the analogy may break down if the facts differ significantly.

03

Boiling an Egg

Boiling an egg is used as a simple analogy: the egg is placed in water and heated, the liquid conducts heat and limits temperature, the egg changes gradually over time, and different people prefer different degrees of doneness. This process can suggest questions about how a controlled environment changes something over time.

04

Snowball Rolling Down a Hill

The analogy of a snowball growing as it rolls down a hill is used to investigate the spread of rumors. As the snowball gets bigger, it picks up more snow—similar to how a rumor gains strength and spreads to more people. The analogy forces questions about what corresponds to the snow, the hill, and the avalanche.

✳

A MOMENT TO REFLECT

Put it to work.

  1. What analogies do you commonly use in your daily life, and could they be leading you to faulty conclusions?

  2. How can you test whether an analogy strengthens or weakens an argument?

  3. Think of an analogy that has been used to explain a complex system (e.g., the economy). What are its limitations?

  4. What everyday activity could serve as an analogy for a problem you are currently facing? How might developing that analogy reveal new insights?

  5. Which ideas has your analogy generated, and what observations or tests would help you assess them independently?

  6. In the snowball rumour analogy, does the 'snow' represent everyone who could hear the rumour or only those likely to believe it? How would that choice change the model?

Connected ideas

Another lens can bring the same problem into focus.

Often confused with

CONTINUE THE CONVERSATION

Source texts

  • Lateral Thinking A Textbook of Creativity (Edward de Bono)
  • The Art of Logic How to Make Sense in a World that Doesn’t (Eugenia Cheng)
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