chatgpt now has more than 100 million registered users. but the latest version isn't free — it's only available to subscribers and will be built into future microsoft products. if you're trying to write a document, if you're trying to create a powerpoint slide, if you're trying to go through your email, this is now a tool that will help you. you can ask it to compose a first draft. take a word document and turn it into powerpoint slides. and as i always say, make sure you read the slides before you present them. you are still in charge. today's ai revolution has been driven by the work of three computer scientists. geoffrey hinton, yann lecun and yoshua bengio developed artificial neural networks to help computers recognise patterns and mimic the human brain. there is still a very