Get the Most Out of This Course

Welcome! Before you dig into judging sources and tracing claims, take a few minutes to see where this course is going, who is guiding you, and how each part connects to the project you will build alongside it. A little orientation now will save you time later.

Discover the Course Objectives

Before you judge a single source, it helps to start with the right mindset. Here is a pattern you have probably seen. Someone reads a confident, professional-looking article, decides it must be true because it looks the part, and repeats it. Then a friend asks one simple question, “How do you actually know that?”, and the whole thing falls apart. Most of us have been that person at some point, trusting a source because it sounded sure of itself rather than because we had checked it.

The most important idea in this course is that judging information is a skill, not a talent you are born with. You do not need to be an expert in a topic to tell a strong source from a weak one. You just need a method, and a little practice.

That is exactly what this course gives you. You will build your method around four simple moves, called SIFT:

1. Stop

2. Investigate the source

3. Find better coverage

4. Trace

You will learn each move in turn, with real examples from everyday life: health, consumer choices, your community. By the end, you will be able to pick up almost any claim and work out how much to believe it, then explain your reasoning to someone else.

Go at your own pace. When you meet an example, pause and ask what you would check first before reading the answer. And expect to be surprised: some sources you were ready to trust will not survive a closer look. That surprise is the learning happening.

By the end of this course, you will be able to look at almost any source, on almost any topic, and decide how much to trust it, then back up that decision with evidence.

Concretely, you will be able to:

• identify who created a source, why, and whether it is independent

• judge how strong the evidence behind a claim really is

• read laterally, leaving a page to check it against independent sources

• trace a claim back to its original, primary source, and record where the trail breaks

• recognize common bias and manipulation patterns, and name the gaps in the evidence

These are not abstract skills. They are the everyday judgment you use whenever something asks you to believe it, whether you are checking a health claim, a product, or a story about your community.

Meet Your Teacher

This course was created by the OpenClassrooms Team with the help of artificial intelligence.

Discover the Course Plan

The course is split into two parts:

Part 1: Investigate and evaluate the source. You start by learning SIFT as a single, transferable method, then focus on the source itself: who made it and why, whether it is independent, and how strong its evidence actually is. This is where you turn the sources you can locate into sources you can trust.

Part 2: Find better coverage, trace claims, and spot manipulation. You then move outward and upstream. You will learn to read laterally (checking a source against independent ones), trace a claim back to its original evidence, and recognize bias and manipulation. The part closes with one claim worked all the way through, from source to verdict, the model you can reuse on any claim you meet.

Each chapter ends with a short, optional self-check so you can test your understanding before moving on. None of these are graded; they are just there to help the method stick.

With the map in hand, let’s begin Part 1 by getting to know the method that holds the whole course together: SIFT.