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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.