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Chapter 5 · LLM Fundamentals

Common AI Mistakes: Hallucinations and Bad Prompts

Hallucinations, vague prompts, and context overload — and how to dodge them.

  1. Lesson 1

    What Are AI Hallucinations? Why LLMs Make Things Up

    AI hallucinations are confident but false answers. Learn why they happen, when they are most likely, and three ways to reduce them.

  2. Lesson 2

    Vague Prompts: Why AI Gives Bad Answers

    Most weak AI answers come from vague prompts. Learn how to replace fuzzy words like 'better' with specific requests that get results.

  3. Lesson 3

    Context Overload: When Too Much Info Hurts AI

    More context is not always better. Learn how long, irrelevant prompts bury key details and where to place your most important instructions.

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