Tool three
Enthymeme Analyser
An enthymeme is an argument that persuades by leaving a premise unstated for the audience to supply. This tool helps you find the ones inside a statement you are about to make — or about to accept.
Aristotle called enthymemes the substance of rhetorical persuasion. They work because audiences complete them, and in completing them experience the conclusion as their own reasoning rather than as something asserted at them. That is what makes them powerful and what makes them ethically demanding.
Nothing here is automated. The tool guides you through the reconstruction and organises what you find — which is deliberate, since supplying the missing premise is exactly the work an enthymeme asks of an audience, and doing it consciously is the whole point.
The book's illustration is an old confectionery slogan promising that a chocolate bar a day helps you work, rest and play. Set out as an argument, the conclusion sits on two premises that were never stated: that work, rest and play require energy, and that this bar is an optimal source of it.
Spelled out, it is much less convincing. You would accept the first premise readily and balk at the second. That is exactly why the second was left out. A well-made enthymeme persuades by smuggling in the claim that would be contested if said aloud — and by having the audience supply it themselves, so the conclusion arrives feeling like their own reasoning.
Organisational versions are everywhere. Our competitors are investing heavily in digital transformation — we must act now. The audience supplies the rest: that competitive parity is what matters most, that the investment confers advantage, that delay carries risk, that acting now means this particular action. None of it is argued. All of it is believed.
The ethical test
Aristotle separated rhetoric from sophistry on ethical grounds. Leaders advocating change cannot avoid rhetoric any more than they can avoid stories, and they will never make every premise explicit. The distinction is whether the premises smuggled in are ones you would defend openly if challenged, and whether the story closes down alternatives that should stay available.
Status: drafted from the manuscript · author review required · worked example paraphrased, not quoted