What AI is and isn't

Most of today's AI is machine learning: programs that learn patterns from huge numbers of examples instead of following rules a person wrote line by line. A chatbot such as Claude or ChatGPT is a very large pattern-learner trained on text. It has no feelings or goals of its own and can be confidently wrong, but it is very good at producing useful text, code and answers.

Why it matters: Everything later in the journey is a closer look at how that pattern-learning works.

Learn it, then prove it

Sign in (free) to take this step's mastery check and save your journey.