 Now, let's talk about the differences of the roles and responsibilities of product managers in different industries. If you work for Big Tech like Facebook and Google, and recently a student might got offered from Facebook, and her responsibilities will be more focusing on designing the photo feature, and during the customer interview process, there will be an independent team that conduct UI UX research interview customers on behalf of you. It's likely you won't directly do customer interview on your own, you'll be working with others to do it. And I'll talk about it, it's very likely you will be working with a bigger team of data scientists, so you won't process those data on your own. So for those bigger team of data scientists, they will build data modeling for you inside of you building it and try to see the insight.