So, remember in the first week, we talked about how you're going to have- the more you are designing customer experience and thinking about customer experience, you're going to get inspiration from the products and services that use on a daily basis. It's something I think about every time I have to do recycling because there's a certain customer experience with this. I had to figure out which parts go in, which bins, and I want to make sure I put things in a right place for the benefits of this city, for the benefit of the environment, et cetera but this is actually really good metaphor for some of the things we're going to talk about during this course, during this week in that the whole recyclable cycle is actually outsourced to third parties and this is something that a lot of companies are doing. So, it's not the municipality that manages is. So it's not Madrid that's managing the recyclables, they're outsourcing to a third party that does a collection and the handling of the recyclables and hopefully putting them into new products and not landfills but more and more companies are also taken a similar approach to outsourcing different parts of their customer experience whether it's part of the customer journey and it's higher stage, like our customer service, customer support operations can be completely outsource or billing, but sometimes is simply website design or other aspects of the customer journey. There's something to be lost. There's a big risk when you outsource parts of the customer experience to third parties because very often their interests are not aligned with the brand messaging that you've defined very carefully at the beginning of the process. So, it's something we're going to explore. We're going to come back to throughout this week but it's a very important metaphor as I tried to recycle my garbage and try to figure out which bins I should put things into, it's something to consider and we'll talk more about it this week.