Christopher Alexander’s reading selection speaks of the intricacies of a pattern. He describes how while a mass produced object, in this case a barn, may have some superficial similarities with other barns, it is equally unique. A designer may follow a certain pattern many times over, but this pattern in just a structure. The ending result could be extremely different each and every time. The designer uses all the knowledge he has come to know going into each design and learns something new upon each completion, therefore he is always evolving. The patterns come from our experience, but there are two types of these patterns, the ones in the world, and the patterns in our mind. These patterns of our mind are intuitive. The patterns control how we go about something in our sub-conscience.