Using Analogies and Comparisons

Analogies are one of the most powerful tools in argumentative writing. A well-chosen analogy can make a complex point instantly clear, expose hidden assumptions, and shift the entire framing of a debate. But analogies are also risky — a weak or forced analogy can undermine your argument more than support it.

This lesson teaches you how to find effective parallels, when to use them, and how to recognise when an analogy is helping or hurting your case.

---

What Is an Analogy?

An analogy is a comparison between two things that are different in most respects but similar in a relevant way. The purpose is to use something familiar or well-understood to illuminate something less familiar or more contentious.

Example:

"Requiring social media companies to verify the age of their users is no different in principle from requiring shops to verify the age of customers buying alcohol. Both involve restricting access to something potentially harmful to young people."

This analogy works because the two situations share a relevant similarity — both involve age-gating access to something that may cause harm — even though they differ in many other respects (physical vs digital, alcohol vs content, etc.).

---

Types of Analogy Useful in Section B

1. Policy Parallels

Comparing the proposed policy to an existing policy in a different domain or another country.

Proposed Policy	Parallel
"Should social media be regulated?"	Traditional media (newspapers, broadcasters) are already regulated — why should social media be exempt?
"Should a sugar tax be introduced?"	Tobacco taxes have been effective in reducing smoking rates
"Should university be free?"	Many European countries (Germany, Norway) already provide free university education

Strength: Policy parallels provide real-world evidence. If a similar policy has been tried elsewhere, you can point to its outcomes.

2. Logical Analogies

Extending the logic of one argument to another domain to test its consistency.

Example:

"Those who argue that surveillance cameras in public spaces are acceptable because 'if you have nothing to hide, you have nothing to fear' should consider whether they would also accept government cameras inside their homes. If privacy is only valuable to those who are doing wrong, then no space should be private — a conclusion most people would rightly reject."

This is a reductio ad absurdum — taking the logic of an argument to its extreme to show that it produces unacceptable conclusions.

Strength: Logical analogies expose hidden assumptions and test the consistency of arguments. They are particularly effective for dismantling superficially appealing claims.

3. Illustrative Analogies

Using a concrete, familiar scenario to explain an abstract point.

Example:

"Expecting individuals to solve climate change through personal choices alone is like expecting passengers on a sinking ship to save themselves by bailing with teacups. The problem is systemic, and the solution must be systemic too."

Strength: Illustrative analogies make abstract arguments vivid and memorable. They can be very effective in introductions or conclusions.

4. Cross-Domain Comparisons

Drawing parallels between different fields to illuminate a shared principle.

Example:

"Just as we accept that professional medical advice should be regulated to prevent quackery from harming patients, there is a case for regulating the financial advice that social media influencers give to their followers. The principle is the same: when people in positions of influence give advice that affects others' well-being, some form of quality control is appropriate."

---

When Analogies Strengthen Your Argument

An analogy strengthens your argument when:

1. The relevant similarity is genuine. The two things being compared actually share the feature that matters for your argument.
2. The analogy is proportionate. The comparison is between things of similar scale and seriousness.
3. The analogy is widely recognisable. The reader is likely to be familiar with both sides of the comparison.
4. The analogy illuminates rather than replaces. It makes your point clearer, not vaguely gesture towards it.