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Overview

The identifyLogicalFallacies flow analyzes a piece of argument text to identify any logical fallacies present and provides detailed explanations for each detected fallacy. This flow is used as a standalone tool for fallacy analysis and can be applied to any argument text.

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Function Signature

export async function identifyLogicalFallacies(
  input: IdentifyLogicalFallaciesInput
): Promise<IdentifyLogicalFallaciesOutput>
Source: src/ai/flows/identify-logical-fallacies.ts:30

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Input Schema

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argumentText
string
required
The text of the argument to analyze for logical fallacies.

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Input Type

const IdentifyLogicalFallaciesInputSchema = z.object({
  argumentText: z
    .string()
    .describe('The text of the argument to analyze for logical fallacies.'),
});

type IdentifyLogicalFallaciesInput = z.infer<typeof IdentifyLogicalFallaciesInputSchema>;

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Output Schema

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fallacies
string[]
required
An array of logical fallacies identified in the argument.
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explanation
string
required
A detailed explanation of each identified logical fallacy.

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Output Type

const IdentifyLogicalFallaciesOutputSchema = z.object({
  fallacies: z
    .array(z.string())
    .describe('An array of logical fallacies identified in the argument.'),
  explanation: z
    .string()
    .describe('A detailed explanation of each identified logical fallacy.'),
});

type IdentifyLogicalFallaciesOutput = z.infer<typeof IdentifyLogicalFallaciesOutputSchema>;

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Example Usage

import { identifyLogicalFallacies } from '@/ai/flows/identify-logical-fallacies';

const result = await identifyLogicalFallacies({
  argumentText: `Everyone I know supports this policy, so it must be the right choice. 
  And if you disagree, you're just not smart enough to understand it.`
});

console.log('Detected fallacies:', result.fallacies);
// Output: ['Ad Populum (Bandwagon)', 'Ad Hominem']

console.log('Explanation:', result.explanation);

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Common Fallacy Types Detected

The AI is trained to identify various logical fallacies including:
  • Ad Hominem: Attacking the person instead of the argument
  • Straw Man: Misrepresenting an opponent’s position
  • False Dichotomy: Presenting only two options when more exist
  • Appeal to Authority: Using authority as the sole basis for truth
  • Slippery Slope: Claiming one action will lead to extreme consequences
  • Circular Reasoning: Using the conclusion as a premise
  • Hasty Generalization: Drawing conclusions from insufficient evidence
  • Red Herring: Introducing irrelevant information to distract
  • And many more…

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Implementation Details

The flow uses a specialized AI prompt that:
  1. Analyzes the argument text for logical errors
  2. Identifies specific fallacy types present
  3. Explains why each instance constitutes a fallacy
  4. Returns structured output with fallacy names and explanations
Prompt Template (from src/ai/flows/identify-logical-fallacies.ts:40): 
You are an expert in logical fallacies. Your task is to identify any logical 
fallacies present in the given argument text and provide a detailed explanation 
for each fallacy.

Argument Text: {argumentText}

Identify the fallacies and provide explanations:

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