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ChatGPT Mastery — From First Prompt to Advanced Workflows Module 4 · Lesson 14 of 15

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Module 4 · Career, projects and honesty Lesson 14 of 15

Limits, hallucinations and how to check

Learning objective

These tools predict plausible text. It will produce a confident, well-formatted answer that is simply wrong, and the format is what makes it convincing That is a mechanism, not a moral failing — and the habit it demands is the habit of asking "where did this come from?" out loud, every time, before you use an answer.

The concept

A model does not look things up unless it has been given a way to look things up, and even then it can attach a real number to the wrong claim. It will produce a confident, well-formatted answer that is simply wrong, and the format is what makes it convincing

So the rule is: numbers, dates, names, citations and legal or medical claims get checked in a primary source before they leave your hands. Everything else — drafts, structure, explanations, practice — is fair game.

Three questions to ask before you trust an answer. Where did this come from? What would make it false? Who is the original source, and can I open it? If the third one has no answer, you have writing material, not facts.

For anything going on a resume or into an assignment: get the original, not a summary of the original. One primary source beats five fluent paragraphs.

Worked example

Ask for "three recent reports on Indian fresher hiring, with links" and check each link. This is the fastest way to see a citation that does not exist.

Your practice task

Ask for one statistic with its source, then open the source. Sometimes it exists. Sometimes the citation is invented, and the number is close enough to a real one to be dangerous. Either way you will remember the exercise.

Do this before moving on. Reading a solution teaches the shape of it; typing it teaches you.

Key takeaway

A model does not look things up unless it has been given a way to look things up, and even then it can attach a real number to the wrong claim.

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15 lessons left of 15

Finish every lesson to unlock the certificate. Each one ends in a practice task — do them and the final project brief writes itself.