It wasn’t long ago that humans designed products and systems using pen and paper. Drawings were done manually, with large teams of people completing drafts on big desks in giant rooms:
The process was cumbersome, laborious, and often inconsistent – each draftsman or draftswoman would have his or her own process for designing and even basic designs took weeks or months to complete. If clients wanted edits or changes the process had to start from the beginning and required complete revisions of the hand drawn designs.
The computer revolution changed everything. Widespread adoption of computers in the workplace enabled engineers to draft, re-draft, and complete designs with relative ease compared to previous processes. The first version of drafting software, Sketchpad, was available in the mid 1960’s: