Fallacy of Impossible Convincing

The fallacy of assuming that it's possible to convince or argue with anyone about anything—even the most absurd, unacceptable, or monstrous positions—through sufficient rationality, evidence, and persuasion. The fallacy ignores that some positions are not reached through reason and cannot be dislodged by it. You cannot argue someone out of a position they didn't argue themselves into. The defender of slavery, the apologist for genocide, the advocate of racist policies—these are not positions that yield to evidence because they were not based on evidence. The Fallacy of Impossible Convincing is beloved of those who believe that all disagreement is misunderstanding, that all conflict can be resolved through dialogue, that the only problem is insufficient communication. It's a noble fallacy, but a fallacy nonetheless.

Example: "He spent years trying to convince his racist uncle that racism was wrong—studies, arguments, personal stories, everything. Nothing worked. The Fallacy of Impossible Convincing had promised that reason would prevail; reason didn't. Some positions are not reachable by argument because they were not reached by argument. He finally understood: you can't reason someone out of something they didn't reason themselves into."

Fallacy of Impossible Convincing by Abzugal February 21, 2026

Fallacy of Impossible Convincing

The fallacy of assuming that it is possible to convince or argue with anyone about anything—including positions so extreme, so absurd, so morally repugnant that they should be beyond the pale of debate. The Fallacy of Impossible Convincing imagines that reason is omnipotent, that every position can be engaged, that no topic is off-limits for discussion. It leads people to "debate" whether slavery should be reinstated, whether genocide has merits, whether racism is defensible—as if these were open questions rather than settled horrors. The fallacy ignores that some positions are not reached through reason and cannot be dislodged by it. Engaging them as if they were reasonable gives them legitimacy they don't deserve.

Example: "He insisted on debating whether racism had any merits—'just to hear all sides.' The Fallacy of Impossible Convincing had convinced him that every position deserved a hearing, that reason could handle anything. But some things aren't positions; they're atrocities. Engaging them as arguments legitimizes what should only be condemned. He wasn't being open-minded; he was being complicit."

Fallacy of Impossible Convincing by Abzugal February 21, 2026