Ian L. Mcharg emphasizes that people should pay more attention to nature and the world around them. Nature has designed itself without any human inference and we can see the perfection that has been created. However, looking at how we, as human beings, design our cities on a macro scale, we see that it is disproportional and disorganized. If we look at how bee hives, stratum, DNA, and other natural creations, we start to see that it was designed by its own in a structural organized way.
visualizing infrastructure 
The Nature design itself symmetrically,most of the nature that surround us it symmetric in shape, and the human being when they started first designing, they always tried to follow the nature roles of the symmetrical shapes. The drawings representing the nature like rivers in much simpler way, and reduce it complexity , to be easier to understand for the regular people. I believe I have seen those type of diagrams in the geographic and the sciences books, which they provide information that are easy to use and compare.
this book is a pretty significant departure from the other we have encountered thus far in class. first off, it was way more wordy; mcharg certainly has a certain gift for prose and for waxing nostalgic. moving beyond the language of the book though, the graphic illustrations are very powerful. the photographs are striking, beautiful and well-chosen. the juxtaposition of images like that at the beginning of the city and country chapter are inviting to dig in to. in this work we have a number of examples of the layering of information. there is the quite literal version that takes place as maps are presented with various types of data mapped onto them, and which are subsequently layered together in order to determine best use corridors. there are also examples such as a couple of those posted above where multiple aspects of the region and info about it are graphed together in a couple of different ways. also, while mcharg writes a subjectively about nature, he presents scientific/factual documentation of the areas he is presenting to us in order to make a viable argument, much as the folks at the sidl do in their projects.
It’s interesting to note that much of our designs and creations comes from nature. There is an inherent structural integrity to the way nature has designed itself, and it is important for us to analyze and interpret this data in order to incorporate this information into our own designs. The way Mcharg layers the data in his mappings effectively communicates specific conditions of nature and how this can ultimately be used to aid design.