Phil goes into the wild to live like the famous Robinson Crusoe. In doing so, he provides a fantastic example of the factors of productivity. Productivity (Phil’s ability to survive in the wild) is determined by his human capital, technological knowledge, physical capital and natural resources. He has natural resources in abundance – fish, sticks, blueberries, honey and fresh water. He has some good technological knowledge because he knows how to build a fire. It’s not clear that he has the experience (human capital) to successfully build the fire. But, having lost his physical capital (fancy camping gear), it’s not clear whether or not he will be able to survive.