Free hand design and digital design complement each other. Free hand design is the process of designing ideas by hand. The goal of the freehand design is to get your ideas and design out on the page to be able to think easily about the problem itself and deal with the computer softwares.Let us say that the design process is a relay race. As a designer, you are always tweaking how you get from point A to point B. The free hand design is the early part of race and managing your path thinking, you brianstorm and map out solutions using the freehand design, then you execute the chosen solution using digital design by using the computer softwares.
We are human not robots, and the reason for this educational section is to learn the bases of design, construction and management; to be able to think and solve solutions as a creative engineer. We have downloaded a semi book to learn the design concept and advanced problems using hand calculations and computer softwares.