As a matter of fact, because I like math a lot (I'm not normal I guess) and I've never learned how to use a slide rule, I have bought some (second-hand) books about slide rules. Unfortunately, this is only out of personal interest, and I'm over my head in professional work, so I'll have to wait some time. Luckily I retire in about 14 years, if they don't change the rules...Watch it, you are stepping on my toes now! I went through engineering school using a slide rule because calculators were not invented yet! Just kidding, you are right that a person has to learn the new tools, and I hung up my slide rule in the closet long ago. I still have it there---just in case.
Kind regards,