The difference between a Recipe (Code) and a Chef (AI).
Because AI is guessing the "best" answer based on patterns, it can sometimes guess wrong.
If you ask a calculator "2 + 2", it will always say "4".
If you ask an AI "Who is the CEO of this company?quot;, it might guess the most famous person it knows in that industry, even if it's wrong. This is called a Hallucination.