Daniel T. Richards

Daniel T. Richards

Innovative Strategist & Digital Expert

6 Ways to Invent an Argument

6 Ways to Invent an ArgumentLeonardo invented flying machines. Dyson invented vacuums. YOU, my rhetor friends, are inventors of argument—molding stats into piercing logic, transforming emotion into actionable appeals, forging years of experience into an armor of ethos.

Damn. You’re good.

But inventing an argument is tough work, and it can be difficult to know where to start. Every subject gives you so much raw material to work with! You might ask yourself:

  • What is the most important element of what I’m trying to argue?
  • What context does my audience need to “get” my argument?
  • How can I present the argument in an interesting or insightful manner?

These are big questions not easily answered (and not by any means exhaustive). They’re complex, intricate, delicate. One way to start thinking about argument invention is through one of Aristotle’s favorite tools: topoi, common topics or ways of thinking about arguments that apply to any subject.

I looked at the four most common topics in a previous post, but I wanted to give some screen time to the wider categories. (If Aristotle thought they were important, then who am I to disagree?) Topoi are particularly effective if you’re looking at a broad or abstract topic and trying to narrow your approach. So whittle away!

There are six categories of topoi: Definition, Division, Comparison, Relationship, Circumstance, and Testimony. Let’s look at how they might apply to the broad subject of environmentalism…

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The Hipster Topics

If you’re a regular reader, you know about the three genres of rhetoric: Judicial (past), Deliberative (future), and Ceremonial (present). And you know about the topics of argument common to all.

But you may not know that each genre of rhetoric has its own special topics. They’re the hipsters of rhetoric, the topics who were around before the other topics came along, and they apply only to their specific genre.

Really they’re not so much special as foundational—almost obvious. The special topics for each genre of rhetoric are:


– Justice / Injustice


–  Good / Unworthy
–  Advantageous / Disadvantageous


– Virtue / Vice

Every special topic is a dichotomy. That is, there are two paths for argumentation: positive and negative. Compromise or even finding a middle road is often a great way to defuse a hostile rhetorical situation. But keep in mind that it usually works best in deliberative rhetoric.

Once you know what genre of rhetoric you’re arguing in (or want to argue in) the central dispute will likely be related to that genre’s special topic(s). They’re at least a good place to start. That’s why special topics are important to know. And special!

Now let’s take a look at how to use them…

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The 4 Common Topics of Rhetoric

Stay on Topic! The common topics of rhetoric.Do you ever feel like you’re having the same arguments over and over again? It’s probably because you are.

Comment threads and forums are especially heinous offenders. Cull the subterrane of Internet commenting and you’ll discover the same arguments over and over and over … (You’ll also discover a bounty of racism, sexism, and every other nasty/weird -ism.)

But the careful rhetor will notice it’s not the content that repeats ad infinitum. The content seems limitless—from superhero disputes to political snarl to grammar wars to fashion skirmishes. What repeats are the lines of argument. Something caused something else. Someone is greater than someone else. Somewhere is unlike anywhere else. Etc.

These are what Aristotle called topoi or “topics.” They are ways to examine or present arguments that are common to any content. And for anyone finding it difficult to discover the most effective means of persuasion, they can be a real life saver.

There are 7 kinds of topics (with about 27 total) and 8 special topics (specific to genres of rhetoric). But these are the four most common:

  1. Possible/Impossible
  2. Greater/Lesser
  3. Past Fact
  4. Future Fact

Can you feel the excitement? (I can.) But let’s not stray off topic

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