Raw Materials to Final Product taken forward to understand commercial production. This also helps understand strategies companies may follow to make products suitable for a given moment. For example, developing them to be launched just in time or when the need arises. Understanding where work should be labour intensive and where to integrate machines. Where to manage quality while understanding economic viability.
 
My take on the IB Curriculum Structure:
If you see the IB curriculum, you will find that the way I have put together the chapters, they differ in order. This is because this is the best way (I feel) to teach Design Technology. Starting from how one comes by ideas, develops them, manufactures them, keeping comfort a priority, and manages resources to come up with a great design solution.