Interactive lessons on argument structure, logical fallacies, and critical thinking. Free, self-paced, no account needed.
How it works
Content sections appear as you reach them. Each concept builds on the last, so the pace is yours.
Quick-check questions gate each section. Get it right to unlock the next one. Wrong answers let you retry.
Each lesson ends with a game that applies the concept to real examples. Spot arguments, sort sources, repair weak reasoning.
Perspectives
Perspectives are themed modules. Click any perspective to explore its lessons.
Start from the foundations. What is an argument? How does reasoning work? How do you evaluate any claim with confidence?
Navigate online information with clarity. Evaluate sources, recognise formats, spot credibility signals, understand algorithms, verify claims, and build lasting digital habits.
Mini-Games
Thirteen critical thinking games you can play anytime. Start with Logic or Fallacy?: swipe to judge quotes from 50 famous historical figures.
Critical thinking is the one skill that improves every other area of your life. Here is why it matters:
Better decisions, in every domain. Whether you are choosing a career, evaluating a medical claim, or weighing a financial risk, your ability to assess evidence and reason through consequences is the difference between a good decision and a costly one.
Resistance to manipulation. Advertisers, politicians, and algorithms are engineered to exploit cognitive shortcuts. Understanding how arguments work, and where they break, makes you far harder to mislead.
Combating polarisation. Most political disagreements are not really about facts; they are about assumptions, values, and how arguments are framed. Learning to identify the structure beneath a debate makes productive disagreement possible instead of exhausting.
Clarity in communication. When you know what a well-formed argument looks like, you can build clearer cases yourself — in writing, in conversation, in any situation where you need to be understood and believed.