The book cradle to cradle is telling us that we need to change the way that our industrial system works. We need to have a system that resembles the natural world and replenishes itself. In the beginning of the book he gives the example of the titanic. A gigantic cruise ship that at the time was thought to be indestructible. It was sunk by an iceberg (nature). He is stating that it is a matter of design in our industry we need to redesign it. We need to model it off of natural systems like the water cycle, the nitrogen cycle and so on. Yes i do agree with the points made in this book, obviously our industry needs to change because it's current methods are not going to last. I think he is on the right track but i think it is going to take more than just changing our industries it is still going to be a matter of cutting back on consumption. It is hard to imagine the factories working in a natural manner because the items that factories produce are far from natural. One specific example that comes to my mind is a car. In the book they mention making a car that gives off positive emissions which i think is an amazing idea but i guess i am just pessimistic in thinking that it is possible. There is one example of an idea that i have which i think the authors of this book would enjoy hearing about. Muhammad Yunus is a noble peace prize winner and a social entrepreneur in bangladesh. He spent a lot of time developing a yogurt that could be affordable and extremely good for the younger children to eat in order to improve children's nutrition. However he has also stated that he wants to go further and create a yogurt which everything is edible, even the packaging that the yogurt is in. I think that is an extremely creative idea which I hope to see one day. It also is one that leaves behind no waste from the product. Of course production of the yogurt would need to be taken into consideration but overall i think the idea of being able to package foods in which the packaging is edible as well would be a natural system in which the authors discuss.