This. I used to work in automotive engineering. I marveled at the lack of security around drawings for mechanical components. Ford, GM, and Chrysler all used t

This. I used to work in automotive engineering. I marveled at the lack of security around drawings for mechanical components. Ford, GM, and Chrysler all used the same design shops to create blueprints. When I went to get the latest drawings they would be sitting out on a big table in the lobby. The rolled up blueprint on top of the 9"mag tape that contained the CAD files. They were clearly marked with the car's model year and the part name and number. Anyone could grab it off the table. Only later in my career did I understand that the drawing for a component, while necessary, was more of a record, not an actual representation of the final component. The final part was a product of a tool that had been crafted to produce it. Die barbers had polished a stamping tool to get a wrinkle out. Someone in manufacturing had changed the melt time for a casting. The slump temperature for a windshield glass had been adjusted. A spray pattern for body paint was manually plugged into a robot arm and adjusted until the desired results were obtained.