PhilosophyThe BestieIntermediate
Logical Fallacies in Real Arguments, a free philosophy course on Tomo

Logical Fallacies in Real Arguments

Move beyond textbook definitions to untangle deceptive reasoning in real debates. Learn how to diagnose hidden rhetorical traps, dismantle causal illusions, and critique arguments without falling into the fallacy hunter's trap.

Like Duolingo, but for Logical Fallacies in Real Arguments. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

A short one: 12 levels across 2 sections, about 24 minutes end to end, roughly 5 days at five minutes a day. It moves through Diagnosing Everyday Distortions and Responding Without Bad-Faith Traps. It assumes you already know the basics.

12 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Felix the Fox, the guide who teaches the Logical Fallacies in Real Arguments course
Logical Fallacies in Real Arguments
with Felix the Fox
12
Levels
2
Sections
5
Min/day
What you'll learn

Key ideas in Logical Fallacies in Real Arguments

  • A bailey is an ambitious, controversial claim that is hard to justify under scrutiny.
  • A motte is an obvious, modest truism substituted when the bailey is attacked.
  • The fallacy succeeds if the speaker pretends defending the truism justifies the radical claim.
  • Equivocation relies on a single lexical term carrying two distinct definitions across premises.
  • The fallacy breaks down as soon as each instance of the ambiguous word is replaced with a precise synonym.
  • The trick exploits shifts between colloquial uses and formal or normative senses.
  • No True Scotsman rescues a universal claim by adding unstated purity qualifiers after counterexamples.
  • The ad hoc modification makes the original generalization unfalsifiable by tautology.
  • A valid qualification states clear, pre-existing boundaries rather than shifting them retrospectively.
  • Operational definitions translate nebulous, values-laden labels into measurable procedures or tests.
  • Without concrete operational criteria, speakers can shift evaluative standards whenever challenged.
  • Semantic drift works through small, individually plausible expansions that compound over time.
  • Each incremental step dilutes the original constraints until the term covers its opposite or extremes.
  • Catching the drift requires comparing the final usage directly against the starting definition.
  • Post hoc ergo propter hoc treats chronological sequence as direct proof of cause
  • A valid causal claim requires demonstrating a plausible underlying mechanism
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives Logical Fallacies in Real Arguments the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

Spotting Sneaky Shifts in Arguments

What role does the 'bailey' play when someone makes a tricky argument?

Get it right to open this lesson and 11 more in the app.

Course map

How to learn Logical Fallacies in Real Arguments, step by step

Go in order. 12 short levels across 2 sections, about 24 minutes in all, five minutes a day.

  1. 1

    Diagnosing Everyday Distortions

    • Detecting Semantic Slippage
    • Untangling Causal and Statistical Illusions
  2. 2

    Responding Without Bad-Faith Traps

    • Neutralizing Dialectical Sleights of Hand
    • Mastering the Ethics of Fallacy Hunting

2 sections · 4 units · 12 levels. Built to play, not to enroll.

Questions

Questions about Logical Fallacies in Real Arguments

  1. How do I learn Logical Fallacies in Real Arguments?

    Go in order: start with Diagnosing Everyday Distortions, then Responding Without Bad-Faith Traps. On Tomo that's 12 short levels, about 24 minutes in all, played five minutes a day. Start free and play the first level in under a minute.

  2. Is there a Duolingo-style app for Logical Fallacies in Real Arguments?

    Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Logical Fallacies in Real Arguments is one of its free courses, and you can type any other topic to get a course of your own.

  3. Is the Logical Fallacies in Real Arguments course free?

    Yes. Logical Fallacies in Real Arguments is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.

  4. How long does it take to learn Logical Fallacies in Real Arguments?

    12 levels across 2 sections, about 24 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.

  5. Do I need any background to start Logical Fallacies in Real Arguments?

    No. It's pitched at an intermediate level, so it starts where you are and builds up. If you can tap a phone, you can start.

New

Tomo is in ChatGPT

Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.

Add Tomo to ChatGPT
How it's taught

You pick the voice

This course
The Bestie

Logical Fallacies in Real Arguments is taught in the Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

Keep going

More Philosophy on Tomo

Everyday Philosophical Traps course icon

Everyday Philosophical Traps

Professor

Philosophy is the hidden operating system behind how we argue, think, and make life choices. Learn to spot the lazy shortcuts, bad logic, and classic misunderstandings that quietly derail everyday reasoning.

12 levels24mBeginner
Practical Logic and Sound Arguments course icon

Practical Logic and Sound Arguments

Bestie

Deconstruct complex problems, spot structural flaws in reasoning, and construct arguments that hold up under pressure. Move from intuition to rigorous, systematic thinking.

21 levels42mIntermediate
Philosophy for Real Life course icon

Philosophy for Real Life

Professor

Learn to challenge unexamined assumptions, spot bad reasoning, and make tough ethical decisions. This course turns classic philosophical insights into everyday tools for clear thinking and intentional living.

24 levels48mBeginner
The Great Conversation: A Map of Western Philosophy course icon

The Great Conversation: A Map of Western Philosophy

Professor

Trace the evolution of human thought by connecting the world's most influential thinkers and the movements they sparked. Move beyond isolated facts to see how ideas argue across centuries.

25 levels50mIntermediate
Everyday Logic: How Arguments Work course icon

Everyday Logic: How Arguments Work

Professor

Learn to break everyday arguments down to their real bones, spot flawed reasoning before you get misled, and construct points that hold up under pressure.

21 levels42mBeginner
Philosophy for Everyday Thinking course icon

Philosophy for Everyday Thinking

Professor

Philosophy is not just abstract speculation for ancient scholars; it is a sharp toolkit for navigating real life. Learn how to dismantle faulty arguments, make principled moral trade-offs, test what is genuinely true, and construct your own personal meaning.

12 levels24mBeginner
Start free

Start Logical Fallacies in Real Arguments today.

Download Tomo, search Logical Fallacies in Real Arguments, and play your first lesson in under a minute.