I was a graphic designer for 35 years, so I had to develop several technical skills over time. When I started in 1985 fax machines were quite new and there were no computers in the offices in the Netherlands.
Most printers had offset, although there were a few that still used letterpress printing. Designs were made on the drawing table. The design drawings were transposed by phototypesetting. And, we can hardly imagine this, there were no mobile phones, let alone the smart ones.
The main conclusion throughout the years was that the techniques may change, yet the rules of corporate identity will not.