In the text author mentions about mostly the primitive architectural design and operations.He commonly use the phrase regulating lines.That phrase means that one of the basic elements of primitive architectural period.Also he mention about the first techniques and strategies which first desginers use while designing the first architectural constructs.For instence one of them is measuring the sizes with an interesting way such as using their body parts like foot,elbow and their fingers.Apart from these he except all these operations a star for humans architectural adventure.While they developing they start to use more certain and spesific techniques for their designs.At that point author says   ‘’ Geometry is the language of man’’.After first designers except the language of geometry, designs start to develop fastly.Also with the geometric elements usage, author mentions about a increase about the number of quality design operations.Also author define these beginings with a remarkable sentence which ‘’ Arch is the first manifestation  of man creating his own world.’’