Drafting is perhaps the most important skill for an engineer. Math, physics, creativity, all of it counts for nothing if designs cannot be reliably and coherently translated to a written format, one which can be read and understood by those who need to make a design. For most of history, any drafting that was done was by an engineer sitting at a desk with a pencil, paper, and some basic measuring and drawing tools. Any mistake could require an entire page to be thrown out, and work to begin anew. However, since the later half of the 20th-century, advancements in computers have allowed for Computer Aided Design and Drafting, or CADD, to proliferate. CADD Programs offer many obvious advantages over hand drafting: as an example, a decimal error on a model can be instantly fixed, rather than requiring an entire draft to be thrown out. Some CADD program additionally allow for models to undergo computer simulations. This allows any flaws in the design to be discovered before prototypes are made, which saves both time and money. However, CADD has not, and likely never will, fully replaced hand drafting. Thus, both are worthy of study and practice, and neither can be neglected by any modern engineer.Â