Evaluate meaning shifts and circularity
Spot equivocation, conflation and circular support by reconstructing the actual steps in an argument.
Original StudyForA scenarios and formative model answers; no Cambridge marks, predicted grades or certified mastery. Alternative reasoned answers may be valid. Full-length unseen papers, a wider mixed-problem bank and calibrated specialist teacher marking remain outstanding.
Before you begin
- Read an English passage closely
- Distinguish a statement from its supporting reason
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
Before evaluating support, what should you identify?
What you will learn
- Recognise shifts in meaning and unsupported equivalence
- Explain why circular reasoning supplies no independent support
Keep terms stable
Equivocation shifts one expression between meanings: ‘The service is free, so it lets us do anything we want’ moves from no price to unrestricted freedom. Conflation treats different ideas as equivalent: being popular is treated as being accurate without establishing the link.
Explain which meanings or properties differ and how the conclusion depends on ignoring that difference. A vague term is not automatically a fallacy; the flaw occurs when the change does argumentative work.
Ask whether the support is independent
Circular reasoning assumes the disputed conclusion in its support. ‘This rule is fair because it is a fair rule’ gives no new reason. Begging the question can hide the same dependence behind a definition: calling a policy ‘the just allocation’ presupposes the fairness being argued for.
A ‘no true’ manoeuvre protects a universal claim by redefining the category after a counterexample: ‘Every genuine volunteer attends; a volunteer who missed the meeting is not genuine.’ If genuine was not independently defined that way, the reply avoids testing the original claim. In the revised syllabus these forms are grouped under circular reasoning.
Sources for this lesson
Pause and explain
What is missing from ‘it is reliable because it can be trusted’?
Worked example
Evaluate ‘Our advice is reliable because it can be trusted; we know it can be trusted because it is reliable.’
Show the worked solution
- Both reasons repeat the same claim.
- No independent evidence of accuracy is supplied.
- The apparent support returns to its starting point.
Answer The reasoning is circular. It restates reliability using ‘trusted’ without supplying independent evidence, so it does not increase support for the conclusion.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
Guided: Explain the meaning shift in ‘This service is free, so no restrictions apply.’
Give me a hint
Compare no charge with unrestricted use.
Compare my reasoning
- Free first means no monetary price.
- The conclusion uses free as unrestricted.
- One property does not establish the other.
The argument equivocates between no-cost access and unrestricted permission. A service can cost nothing while still imposing rules, so the conclusion lacks support.
Look for these in your work
- Identifies both meanings
- Shows the inferential gap
- Gives a relevant counterexample
Independent: ‘The most popular explanation must be the most accurate.’ Identify the weakness.
Give me a hint
The two rankings measure different properties.
Compare my reasoning
- Popularity measures acceptance.
- Accuracy concerns truth or fit to evidence.
- No reliable connection is provided.
The argument conflates popularity with accuracy. Acceptance can result from familiarity or persuasive presentation, so an independent accuracy check is needed.
Look for these in your work
- Separates the concepts
- Explains the gap
- Names needed support
Application: ‘Every genuine volunteer attended.’ An absent volunteer is reported. The author replies, ‘Then they were not genuine.’ Assess the reply without an independent definition.
Give me a hint
Does the reply test or protect the original claim?
Compare my reasoning
- The counterexample challenges the universal statement.
- Genuine is redefined to exclude it.
- No independent criterion justifies the exclusion.
The reply protects the claim by defining away the counterexample rather than supporting it. Without an independent meaning of genuine, it is a circular ‘no true’ response and does not establish universal attendance.
Look for these in your work
- Uses the counterexample
- Explains the redefinition
- Assesses its impact
Common mistakes
- Labelling ambiguity without showing its role
- Confusing popularity and accuracy
- Accepting a definition that assumes the disputed conclusion
What can you explain now?
What is missing from ‘it is reliable because it can be trusted’?
Compare with the explanation
Independent support for reliability
Rephrasing a conclusion does not establish it.
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Make it stick
What is missing from ‘it is reliable because it can be trusted’?
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.