Did you use CAD much in engineering or had you already retired by the time it became the standard.
We used Microstation which is better than Autocad. But most of my work was with structural analysis programs and anlysing the forces of ocean waves on fixed and floating drilling platforms. Stuff that was not possible before we had computers. At first we had to take our problems to a main frame computer to be run and then personal computers came out and then we got computers on our desks.