Subtitles section Play video Print subtitles What is Appeal to the stone (argumentum ad lapidem)? Appeal to the stone (argumentum ad lapidem) is a logical fallacy where someone dismisses an argument or claim as absurd without providing evidence or reasoning to support the dismissal. It avoids debate by simply rejecting the claim as unworthy of serious consideration. Every day Example: Imagine a situation in a school where a student proposes a new method for organizing the library books by color to make it more visually appealing and possibly easier for young students to find books. The librarian, without considering the potential benefits or logistics of the idea, dismissively says, “That's the silliest thing I've ever heard,” and moves on. While the librarian might be right to reject the idea and might have valid argument against the idea, he did not actually present his argument, this is an appeal to the stone because it rejects the proposal as absurd without explaining why he thinks it is absurd.