What AI chat tools are (and aren't)
A very well-read autocomplete
Tools like Claude and Copilot are built on large language models. A language model learned patterns from a huge amount of text, and works by predicting what words should come next, one piece at a time. That's how it can write, summarise, translate and explain so fluently.
It's not a search engine, a calculator or a person:
| Usually good at | Can struggle with |
|---|---|
| Drafting emails, letters and messages | Exact facts, especially recent or local ones |
| Explaining ideas in simpler words | Precise maths without checking |
| Summarising and reorganising text | Knowing what it doesn't know |
| Brainstorming lots of ideas | Information about you, your workplace or your school it hasn't been told |
| Rewording for a different audience or tone | Real sources — it can invent ones that look real |
Confidently wrong
Because it predicts likely-sounding text, an AI tool can produce something that sounds right but isn't — a wrong date, a made-up quote, a book that doesn't exist. This is often called a hallucination. It doesn't mean the tool is useless: it means you're the editor. Module 6 shows you how to check.
Answers vary
Ask the same question twice and you'll often get different answers. That's normal. It's also why this course shows you prompts rather than "the" answer — what you get will be your own.
Try it
Ask an AI tool something you know a lot about (your suburb, your sport, your favourite game). How much does it get right? Anything wrong?