ChatGPT is a freely accessible artificial intelligence chatbot. Via text, you can ask it questions and it will respond in a human-like style. It is capable of providing answers to questions in a range of subjects (including maths and science), it can write essays and provide summaries of books. It does this by having learnt from a large set of training data, which includes a snapshot of a large portion of the internet taken in 2021. As a result, whilst its answers are mostly accurate, it can provide information that is untrue and it is incapable of providing the sources from which its information is drawn.