What Is Your Map Really Trying to Prove?

Introduction

When people say they are “mapping a decision”, they often begin with a topic: job offer, working from home, should we introduce a new policy? The problem is that a topic is not yet an argument. An argument map becomes useful only when it is organised around a claim that could be accepted, rejected, questioned, or supported. In practice, the most effective maps for everyday decisions are often conclusion-first maps: they start by stating exactly what is being defended and then work backwards to examine the reasons, evidence, objections, and assumptions. Argument-mapping guidance consistently places identification of the main claim or conclusion at the centre of the mapping process because the structure of the rest of the map depends on it.[The Open University+2The Open University]open.eduFirst, try to find the main claim. The main claim is the overall point or conclusion that the author of the text is making.Read more…

For improving thinking and analytical skills, this seemingly small change matters. A clear conclusion prevents a map from becoming a collection of disconnected considerations. It forces the question: what, exactly, am I trying to prove?

What Is Your Map Really Trying to Prove?

Many reasoning failures occur before any evidence is examined. The mistake is not weak support but an unclear target.

Consider the difference between these starting points:

• “Remote work”

The first group names subjects. The second group states conclusions. Only the second group can serve as the top node of an argument map because only they make a definite claim. Argument-mapping methods therefore emphasise identifying the main claim before building the rest of the structure.[The Open University+2Reasons]open.eduFirst, try to find the main claim. The main claim is the overall point or conclusion that the author of the text is making.Read more…

A useful test is whether someone could reasonably respond “yes”, “no”, or “I’m not convinced”. If they can, the statement is probably specific enough to function as a conclusion.

Starting with a conclusion also reduces a common analytical error: endlessly collecting information without knowing what decision the information is supposed to support. Evidence gains meaning only relative to a claim.

Turning Topics into Testable Claims

A practical way to build conclusion-first maps is to convert broad topics into explicit decision statements.

Instead of mapping:

• “Buying a house”

Map:[ddd.uab.cat]ddd.uab.catcat Argument mapmap - Wikipedia, the free encyclopedia5 Jul 2016 — An argument map typically includes the key components of the argument, traditionally c…

• “I should buy the house on Oak Street this year.”

Instead of mapping:

• “Public transport”

Map:[ddd.uab.cat]ddd.uab.catcat Argument mapmap - Wikipedia, the free encyclopedia5 Jul 2016 — An argument map typically includes the key components of the argument, traditionally c…

• “The city should expand the tram network into the northern district.”

Instead of mapping:

• “Career options”

Map:[ddd.uab.cat]ddd.uab.catcat Argument mapmap - Wikipedia, the free encyclopedia5 Jul 2016 — An argument map typically includes the key components of the argument, traditionally c…

• “I should move into product management within the next twelve months.”

The more concrete the claim, the easier it becomes to identify relevant support and irrelevant distractions.

This approach mirrors evidence-based decision-making practices, which focus on evaluating evidence in relation to a specific claim, assumption, or hypothesis rather than treating information gathering as an end in itself.[CIPD]cipd.orgEvidence-based practice for effective decision-makingEvidence-based practice for effective decision-makingMay 19, 2025 — Evidence-based practice is an approach for improving decision-mak…Published: May 19, 2025

A conclusion-first map therefore acts as a filter. Every reason, statistic, anecdote, or objection must answer a single question: does this help establish or weaken the conclusion?

Finding the Real Top-Level Conclusion

One of the most valuable skills in argument mapping is distinguishing the final conclusion from supporting conclusions.

In many everyday decisions, people accidentally place a supporting claim at the top of the map. For example:

These are not the decision. They are reasons.

The actual conclusion might be:

• “I should accept Job Offer A.”

Argument-mapping literature frequently distinguishes between the main conclusion and intermediate conclusions. Intermediate conclusions function both as conclusions and as premises: they are supported by evidence and then go on to support a higher-level claim.[Humanities LibreTexts+3LSAT Demon+3PastPaperHero]lsatdemon.comargument parts and indicatorsLSAT DemonArgument Parts and Indicators6 Mar 2022 — An intermediate conclusion is a conclusion that supports the main conclusion. Think o…

A simple diagnostic question helps identify the true top-level conclusion:

If all these reasons were proven true, what decision would follow?

The answer is usually the main conclusion.

For example:

Without separating these levels, maps become confused. A person may spend hours debating salary data while never clearly stating the decision the salary is supposed to justify.

Using Job Offers as a Conclusion-First Example

Imagine choosing between two jobs.

A topic-first approach often produces a list:

• Salary
• Culture
• Location
• Flexibility
• Benefits

The list is useful but lacks direction.

A conclusion-first map begins with:

“I should accept the offer from Company A.”

The next level contains supporting and opposing reasons.

Supporting reasons:

• Total compensation is higher.
• Promotion opportunities appear stronger.
• The role develops skills aligned with long-term goals.

Objections:

Each branch can then be tested independently.

Notice what changes. The discussion is no longer about whether salary is “good”. It is about whether salary contributes enough support to justify the specific conclusion. This keeps analytical effort focused on the actual decision rather than on isolated factors.

Using Policy Choices as a Conclusion-First Example

The same principle works for public or organisational decisions.

A policy discussion often starts with a vague subject such as “school uniforms” or “congestion charging”. Participants then talk past one another because different people are defending different conclusions.

A conclusion-first map begins with a statement such as:

“The school should introduce a uniform policy next year.”

Supporters and critics can now attach reasons to the same claim.

Support might include:

• Reduced visible economic differences among pupils.
• Simpler dress-code enforcement.

Objections might include:

• Additional costs for families.
• Reduced student autonomy.

The advantage is not that disagreement disappears. Rather, the disagreement becomes easier to locate. Participants can identify whether they dispute the evidence, the assumptions, or the conclusion itself.

Argument-mapping approaches used for analysing real-world decisions similarly organise reasons around explicit conclusions so that support and objections can be examined systematically.[Insight Assessment+2Open University]insightassessment.comInsight Assessment Mapping Decisions and ArgumentsInsight AssessmentMapping Decisions and Arguments - Insight AssessmentThe twenty example maps included begin with a configuration illustr…

Common Mistakes When Building Decision Claims

Even when people try to start with a conclusion, several predictable problems appear.

Conclusions that are too vague

A claim such as “remote work is good” is difficult to evaluate because it is unclear what action follows.

A stronger conclusion is:

“Our department should continue remote work three days per week.”

The revised version identifies a decision rather than a general attitude.

Conclusions that hide multiple decisions

Consider:

“We should move offices, restructure the team, and adopt a new software platform.”

This bundles several decisions together.

A better approach is to map each decision separately and then examine any relationships between them.

Conclusions that merely restate evidence

People sometimes place a factual observation at the top:

“Employee satisfaction increased.”

That may be true, but it is not necessarily the decision being defended.

The real conclusion might be:

“Because employee satisfaction increased, the flexible-working policy should continue.”

The observation becomes evidence rather than the conclusion.

Why Conclusion-First Mapping Improves Thinking

Conclusion-first maps create a discipline that ordinary discussion often lacks. By requiring a clear decision claim at the top, they prevent the map from drifting into brainstorming, information dumping, or debates over side issues.

The practical benefits are significant:

• Better relevance: evidence must connect to the stated conclusion.
• Clearer disagreement: objections can target specific claims.

In everyday reasoning, the most important box in an argument map is often the first one. If the top-level conclusion is unclear, every branch beneath it risks becoming confused. If the conclusion is explicit and testable, the map gains a clear purpose: showing whether the decision really deserves support.

Amazon book picks

Further Reading

Books and field guides related to What Is Your Map Really Trying to Prove?. Use these as the next step if you want deeper reading beyond the article.

Book

A Rulebook for Arguments

By Anthony Weston

Strongly reinforces the idea of identifying conclusions first and then assessing supporting reasons.

See on Amazon

Book

Asking the Right Questions

By M. Neil Browne, Stuart M. Keeley

Emphasises identifying the issue, conclusion, and supporting evidence before judging an argument.

See on Amazon

Book

Critical Thinking

By William Hughes

Shows how conclusions, premises, objections, and assumptions are organised in structured maps.

See on Amazon

Book

Good Arguments: How Debate Teaches Us to Listen and Be Heard

By Bo Seo

Focuses on clarifying what is actually being argued and what claim is being defended.

See on Amazon

Browse more on Amazon: A Rulebook for Arguments Asking the Right Questions Critical Thinking

As an Amazon Associate I earn from qualifying purchases.

eBay marketplace picks

Marketplace Samples

Example marketplace items related to this page. Use the search link to explore similar finds on eBay.

Shop location

UsingUSA USA USAUKCanadaAustraliaIreland

Example eBay listing

Manic Street Preachers Critical Thinking T Shirt

SearcheBay.co.uk: critical thinking t shirt

Browse similar oneBay.co.uk

Example eBay listing

Critical Thinking The Other Nation Sarcastic Humor Graphic Novelty Funny T Shirt

SearcheBay.co.uk: critical thinking t shirt

Browse similar oneBay.co.uk

Example eBay listing

EAT SLEEP THINK T-SHIRT - critical thinking philosophy university intelligent

SearcheBay.co.uk: critical thinking t shirt

Browse similar oneBay.co.uk

Example eBay listing

Critical Thinking Is Now Extremism T-Shirt, Patriot Not Marxist, Patriotic Shirt

SearcheBay.co.uk: critical thinking t shirt

Browse similar oneBay.co.uk

Browse more oneBay.co.uk

Example items shown for inspiration; availability and pricing can change. Branchoria may earn a commission if you purchase through outbound eBay links.

Endnotes

1. Source: open.edu
Link:https://www.open.edu/openlearn/ocw/mod/oucontent/view.php?id=96118&section=1

2. Source: open.edu
Link:https://www.open.edu/openlearn/mod/oucontent/view.php?id=95869&section=2.2

3. Source: reasons.io
Title: Critical Thinking with Argument Maps
Link:https://reasons.io/learn/05

4. Source: cipd.org
Title: Evidence-based practice for effective decision-making
Link:https://www.cipd.org/uk/knowledge/factsheets/evidence-based-practice-factsheet/

Published: May 19, 2025

5. Source: pastpaperhero.com
Link:https://www.pastpaperhero.com/resources/lsac-lsat-introduction-to-logical-reasoning-distinguishing-intermediate-and-main-conclusions

6. Source: human.libretexts.org
Title: 1.05: Diagramming Arguments
Link:https://human.libretexts.org/Bookshelves/Philosophy/Logic_and_Reasoning/Fundamental_Methods_of_Logic_%28Knachel%29/01%3A_The_Basics_of_Logical_Analysis/1.05%3A_Diagramming_Arguments

7. Source: lsatdemon.com
Title: argument parts and indicators
Link:https://lsatdemon.com/resources/logical-reasoning/argument-parts-and-indicators

8. Source: insightassessment.com
Title: Insight Assessment Mapping Decisions and Arguments
Link:https://insightassessment.com/iaresource/mapping-decisions-and-arguments/

9. Source: open.ac.uk
Link:https://www.open.ac.uk/blogs/rrimap/index.php/4-argument-map/

10. Source: Wikipedia
Title: Argument map
Link:https://en.wikipedia.org/wiki/Argument_map

11. Source: ddd.uab.cat
Title: cat Argument map
Link:https://ddd.uab.cat/pub/expbib/2009/34875/oratoria09/Argument_map

12. Source: studysmarter.co.uk
Title: argument mapping
Link:https://www.studysmarter.co.uk/explanations/psychology/cognitive-psychology/argument-mapping/

Additional References

13. Source: damiantgordon.com
Link:https://www.damiantgordon.com/EducationalModels/CriticalThinking/ArgumentMaps/CriticalThinking-ArgumentMaps-Details.pdf

14. Source: testpartnership.com
Link:https://www.testpartnership.com/academy/interview-questions-decision-making.html

15. Source: patterns.sociocracy30.org
Link:https://patterns.sociocracy30.org/reasoned-decision-making.html

16. Source: targetjobs.co.uk
Link:https://targetjobs.co.uk/careers-advice/interviews-and-assessment-centres/describe-time-when-you-had-be-effective-decision-maker-tricky-graduate-interview-question

17. Source: comm.pitt.edu
Title: Department of Communication Argument: Claims, Reasons, Evidence
Link:https://www.comm.pitt.edu/argument-claims-reasons-evidence

18. Source: libguides.usask.ca
Title: ca Critical Thinking Tutorial: Argument Mapping
Link:https://libguides.usask.ca/CriticalThinkingTutorial/ArgumentAnalysis/ArgumentMapping

19. Source: clevry.com
Link:https://www.clevry.com/en/resources/competency-based-interview-questions/decision-making-interview-questions-answers/

20. Source: ca.indeed.com
Title: decision making interview questions
Link:https://ca.indeed.com/career-advice/interviewing/decision-making-interview-questions

21. Source: readlite.in
Title: map argument structure
Link:https://readlite.in/concepts/map-argument-structure

22. Source: ecampusontario.pressbooks.pub
Link:https://ecampusontario.pressbooks.pub/criticalthinking1234/chapter/introduction/