 Hi, I'm Charlotte and I'm here to talk about artificial intelligence. Did you know there are five big ideas in AI? They are perception, representation and reasoning, learning from data, natural interaction and societal impact. Number one is perception. Perception is when a computer uses sensors to gather data and then extracts meaning from those signals. Number two, representation and reasoning. Representation is when a computer builds its own world so that it can understand, just like a Google map. That's an example of a representation of how the computer perceives the world. Then it can apply reasoning to that representation. For example, to take you on the correct bike path or to route you via Uber. Number three, learning from data. Computers use a lot of data to do the processing that allows them to think artificially. That's artificial intelligence. All AI systems are made from a lot, a lot of data. Number four, natural interaction. Natural interaction is when we've trained an AI system to interact naturally with the people around it. That means that you can trust Google Translate to say the words that you're saying in another language or perhaps you use facial recognition and you trust that that system will only let the correct people into the building. Number five, societal impact. AI affects our world in positive and negative ways. AI makes it so that no one in the world starves. But we also have to make sure to guard against implicit bias and make sure that the computer algorithms that we write are fair for everyone. So these are the five big ideas in AI. Perception, representation and reasoning, learning from data, natural interaction and societal impact. Watch more videos to learn more in depth about each of these ideas.