Precision in a linear time ware, occur after the proximity. In fact, raising one, end up to the different consequences. Precision passes and raises above the proximity relaying on ergonomical logic and the economy of environ. Proximity and precision constructing the form and creating the meaning of composition .but this composition is the consequence of different time length entities. Precision and time consuming have a direct relation. It means that proximity is part of precision process in both directions which ends up to more precise or proximate. It is true that all proximities are part of precision process; they build the building. That means the composition is the result of time differ incidents. All the architect effort is to achieve the precision. In other word synchronizing all the different time properties of materials. House no. 12 is experiencing the collective destiny of unequal time length material in a close set. All the neighboring of entities is exploration of the decay. "Decay" is the counter process of proximity to precision which happening in house no. 12.