Build a Persuasive Case
Writing that informs is easy; writing that changes a busy reader’s mind is the real skill. This part shows you how to turn an opinion into an argument, choose reasoning that fits your reader, and ground it in the appeals that have persuaded people for centuries, so your case actually lands.
From Opinion to Argument
An opinion tells the reader what you think. An argument shows them why, in a way that respects their point of view. At work, you rarely write to people who already agree with you, so a bare opinion is easily dismissed.
This course assumes you have some experience with professional written communication, so Part 1 is pure application: deciding what belongs in each slot for a real reader, and combining reasoning types so the case actually lands.
Thesis: state your position clearly and early.
Antithesis / concession: show you understand the reader’s view and the constraints they face.
Synthesis: propose a way forward that takes both into account.
The concession is the part beginners skip, and it is the part that makes you persuasive. A reader who feels understood is far more likely to keep reading.
Example (a volunteer-run community garden):
(Thesis) I recommend we move the Saturday work sessions to Sunday mornings.
(Concession) I know Saturday has worked for years and that some members have built their week around it.
(Synthesis) But attendance has dropped to four people on Saturdays, while six members told me they are free on Sunday. Moving the session would roughly double the help we get, so I suggest we trial Sundays for one month and review.
Choose Your Reasoning
WPWD listed four types of reasoning. The skill is knowing when each one works best.
Authoritative reasoning: lean on a rule, policy, or recognized source. Use it when the reader respects the authority and the facts are not in dispute.
Logical reasoning: show cause and effect. Use it for decisions and process problems, where one thing clearly leads to another.
Reasoning by analogy: compare to a similar, familiar case. Use it to make an unfamiliar idea concrete.
Reasoning by concession: anticipate the objection and answer it. Use it with a skeptical or busy reader.
A strong professional document usually combines at least two: for example, logical reasoning to make the case, plus concession to disarm the main objection.
Example (a small office):
(Logical) Our shared printer runs out of toner roughly every three weeks, and each time work stops for half a day while someone orders a cartridge.
(Concession) Keeping spare toner on the shelf does tie up a little budget.
But the cost of one spare cartridge is far less than the lost time, so I propose we keep two in the supply cupboard.
The Foundations of Persuasion: Ethos, Pathos, Logos
Persuasion is not a modern invention. Over two thousand years ago, Aristotle described three appeals that still explain why writing convinces, or fails to. Understanding them gives you a vocabulary for why an argument works.
Ethos: the appeal from credibility. The reader trusts you because of your role, your evidence, or your fairness. In writing, ethos comes from accuracy, a reasonable tone, and acknowledging the other side, your concession builds ethos.
Pathos: the appeal to the reader’s values and feelings. Not manipulation, but connecting your point to something the reader genuinely cares about (fairness, the group’s mission, saving time).
Logos: the appeal to reason: evidence, logic, and clear structure. This is where your reasoning types live.
WPWD distinguished persuading (working on feelings) from convincing (working on reason). In practice, effective professional writing blends all three appeals in one argument: logos carries your evidence, ethos builds trust, and pathos connects to values without manipulation. A fourth lens often used in business contexts is kairos: timing, appropriateness, and decorum for the situation.
Example (a community center proposal):
Ethos: “Having coordinated the last three events, I have seen the attendance figures first-hand.”
Logos: “Attendance rose 40% when we offered evening sessions.”
Pathos: “More evening sessions means more neighbors who would otherwise be excluded can take part.”
A balanced argument uses all three appeals and matches the moment. An argument that is all logos can feel cold; one that is all pathos feels manipulative; one that is all ethos feels like name-dropping. Reading for which appeal or timing cue is missing is a fast way to diagnose why a draft is not landing.
Kairos: The Right Argument at the Right Time
The three appeals tell you how to argue. Kairos tells you when. Kairos is the art of timing and fit: saying the right thing, in the right way, at the right moment. Even a strong argument can fail if it lands at the wrong time, a budget request the day after a shortfall, or a bold proposal in the middle of a crisis.
To use kairos, ask three questions before you write:
Is now the right moment? Has something just happened that makes the reader more, or less, open to this?
Is this the right channel and length? A two-page case during a busy week may go unread; a one-line ask may be too thin for a big decision.
Is the framing fit for the mood? When money is tight, lead with cost savings; when morale is low, lead with the shared goal.
Example: proposing a new expense right after the group missed its fundraising target reads as tone-deaf. The same proposal, framed two weeks later as a way to prevent the next shortfall, reads as helpful. The argument did not change, the timing and framing did.
Build a Counterargument: The Refutation Move
A concession shows you understand the other side. A refutation goes one step further: it states the likely objection and answers it. Used well, it removes the reader’s main reason to say no before they can raise it.
A complete persuasive case usually contains six moving parts:
Claim: the position you want the reader to accept.
Context: the background they need to understand it.
Reasons: why the claim holds.
Evidence: the facts that back each reason.
Opposing viewpoint: the strongest objection, stated fairly.
Call to action: the specific next step you want.
The refutation move is the fifth part done deliberately: name the objection, then answer it.
Example (refutation in two sentences):
“You might worry that moving to Sunday loses our Saturday regulars (opposing viewpoint). In fact, only four still attend on Saturdays, and three of them have already said Sunday works better for them (answer).”
Do and Don’t: Persuasive Openings
The opening decides whether the rest is read. Compare these openings for the same proposal. Each “don’t” breaks one rule; each “do” fixes exactly that.
1. Lead with the ask, not your life story.
✗ Don’t: “Over the past few months I have been thinking a lot about our schedule and talking to various people…”
✓ Do: “I recommend we trial Sunday work sessions for one month. Here is why.”
2. Show the reader you understand them.
✗ Don’t: “We need to change the schedule. Saturday isn’t working.”
✓ Do: “Saturday has served us well for years (concession). But attendance has now dropped to four, so I suggest we trial Sundays.”
3. Match the appeal to the reader.
✗ Don’t (to a budget-focused reader): “It would just feel better to meet on Sundays.”
✓ Do: “Moving to Sunday would roughly double attendance at no extra cost.”
Each “do” version is shorter, leads with the point, and chooses its appeal on purpose. That is the whole job of an opening.
Warm-up Practice
Pick a real change you would like to propose in a non-work group you belong to (a club, an association, a household). Write a short paragraph that:
states your thesis in one sentence
includes one genuine concession
ends with a synthesis
uses at least two reasoning types, and label them in brackets
Your Turn! Rewrite a Weak Persuasive Note
Below is a starter document: a real-sounding but weak persuasive note. Your job is to rebuild it using what you have just learned.
Starter material (weak version):
Subject: Idea
Hi everyone, I’ve been thinking and I really feel like we should get a new coffee machine for the volunteer room. The old one is annoying and breaks a lot and honestly it would just make everyone happier if we had a better one. Let me know what you think.
Your task. Rewrite the note so that it:
leads with a clear ask in the first sentence
includes one genuine concession or refutation
uses at least two reasoning types (label them in brackets)
ends with a specific call to action
chooses an appeal suited to a budget-conscious committee
Spend about 20 minutes. Then compare with the model solution at the end of this chapter.
Let’s Recap!
An argument shows the reader why; an opinion only states what you think.
A genuine concession or refutation is what makes a case persuasive, not just correct.
Match the reasoning type (authoritative, logical, analogy, concession) to your reader.
Ethos, pathos, and logos work together, and kairos fits the argument to the moment.
A complete case has a claim, context, reasons, evidence, an opposing view, and a call to action.
A strong case can still be buried by poor order. Next, we structure it so the reader meets your main point first and can follow your logic at a glance.
Model Solution (one strong version):
Subject: Replacing the volunteer-room coffee machine — quick decision needed
Hi all,
I recommend we replace the volunteer-room coffee machine this month (claim). I know we replaced it only three years ago and that the budget is tight (concession). But it has broken four times since January, and each repair costs about $40 (logical reasoning), we have already spent more on repairs than a new machine would cost (evidence). A reliable machine also keeps volunteers in the building during breaks instead of leaving for a café (logical reasoning).
You might worry a new one will break just as often (opposing viewpoint); the model I propose has a two-year warranty, so repairs would be covered (refutation).
Could we approve up to $120 at Thursday’s meeting so I can order it this week? (call to action)
Thanks,
Alex
Notice what changed: a precise subject line, the ask first, a labeled concession and refutation, two reasoning types, evidence, and a concrete call to action. The weak version had none of these.
