In the last 20 years, there has been a technological revolution in architecture as architects have transitioned from drafting tables to computers. As this change has occurred it has only illuminated the lasting importance of the hand sketch. Architectural sketches can communicate an idea or concept, as well as an emotion. A sketch is a gesture that helps communicate a solution to a design problem, and it is a vision that helps evoke the spirit of a design.
There is a certain pace to sketching that matches a thought process. The sketch is not just describing a final design, but an important tool in the process of design. As such, accuracy is not important, and imperfections are desirable. A hand sketch can show humanity. The imperfections evoke a vulnerability that draws people into a relationship with a design.