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Applied AI · Beginner Level 🟢

Info or fake? Critical thinking in the age of AI

by Yann Isola · Session 9 🔎

AI biases 🟢

An AI is not “neutral”. It learns from data made by humans — and it inherits their errors and biases.

Human data
sometimes unbalanced
AI learns
biases too
Biased result
which seems “objective”

Example

If an AI has only seen photos of male doctors, it will “think” that a doctor must be a man. This is not malice — it is a reflection of data .

The trap: an AI response looks safe and well written. That doesn't mean she's right.

Disinformation & deepfakes

A deepfake is a video, an image or a voice manufactured by AI to make someone say or do something… who has never done it.

🔍 How to spot them

👁️

The eyes

Fixed gaze, odd or absent blinks.

👄

The mouth

Lips poorly synchronized with sound.

💡

The light

Shadows that don't stick to the face.

hands

Extra, deformed or fuzzy fingers.

🔊

The voice

Your flat, absent breathing, robotic.

📅

The source

Where does the video come from? Who published it?

Reflex: before sharing a shocking video, ask yourself “what if it was fake?” ". Quick sharing is the fuel of intoxication.

Check information: the checklist

Before believing (and sharing), filter the information. Click to check each reflex.

🟢 The golden rule: The more information annoys or surprises you, the more you need to check it. Before to believe it.

Privacy & personal data

AIs love data. What you give them can be stored, read, reused. Protect what is yours.

To do

  • Think before pasting personal text into an AI
  • Use a nickname when possible
  • Read (at least quickly) what we accept
  • Ask an adult if in doubt

To avoid

  • Give your address, your school, your number
  • Send private photos to an AI
  • Share others' secrets
  • Believing that “it’s private” by default
Remember: once a piece of data is online, you no longer really control it.

Mini-quiz: your critical thinking 🟢

A viral video shows a celebrity saying something outrageous. What do you do first?

🟢 Bravo: doubt, check, then decide. This is critical thinking in the age of AI.