Welcome back. You're now in the fourth and final week of AI for everyone and so close to finishing this course. AI is a superpower that enables a small team to affect a huge number of people's lives. So, whether you're builder or user of AI or whether you're just somebody cares about AI's impact on society, is important that you learn about these trends, so that you can make sure the work you do leave society better off. Let's take a look. AI is changing the world, but there's also been a lot of unnecessary hype about it. For citizens and business leaders and government leaders to navigate the rise of AI, it's importance is that we all have a realistic view of AI. Now, in week one you already started to learn about some of the technical limitations of AI. AI has other limitations as well. For example, AI can be biased and discriminate unfairly against minorities or against other groups. So, how do we address this? AI technology is also susceptible to adversarial attacks, meaning for example, we love our spam filters, it helps the email system keep on functioning. But there are spammers that are trying to attack spam filters. Even as we develop new AI technologies, some of the new technologies may be susceptible to new types of attacks as well if people are deliberately trying to fool the AI. Developed economies such as the US and China, are already using AI extensively, but they'll also have a big impact on developing economies and on the global jobs landscape. Many of these issues are implicated in AI and ethics. To make sure that the work we do in AI is ethical. This is a topic that is complex and there aren't simple answers. In fact, I think the topic of AI and ethics deserves it's own four week or much longer course. But I hope this week to at least touch on some of the major issues so that even as you build or use AI, that you understand some of the major issues associated with the rise of AI. Finally, at the end of this week, we will wrap up AI for everyone. I look forward towards spending these last few videos of you. Let's get started by talking more about having a realistic view of AI in a way that goes beyond just the technical and performance limitations of AI. Let's go to the next video.