Inspired by this thread, i’ve gotten to thinking about things I learned in school or elsewhere that I never got a chance to use because I was learning them just as they were becoming obsolete.
In college, I took a photography class where I learned how to develop film by hand. This was in 2002, just as the digital camera was on the cusp of taking over.
In 4th grade, my class did a financial simulation where we learned how to write checks and balance a checkbook. I write checks to pay my rent once a month, but by the time I was old enough to have a checking account internet banking had made manual balancing an exercise in redundancy.
That same year, my class learned how to code in BASIC on Apple ][E computers. Granted, those were ALREADY out of date by then, but our school district wouldn’t upgrade to Macs until I was in 7th grade.
Around the same time we got an in-depth course on the ins and outs of using a library card catalogue, which all the libraries in my city got rid of in favor of electronic catalogues about 2 years later. (My high school library still had one, though.)
In 6th grade we learned how to look up and read stock quotes in the newspaper, just before everyone and their mother started using the internet for that.
In junior high, we learned how to write web pages in raw HTML, which i’m fairly sure nobody does anymore. We also learned all about Usenet, Telnet, and Gopher, which i’m fairly sure LESS than nobody uses anymore, and FTP, which I think there might still be like one or two people using somewhere.
A few years back, I remember spending hours tweaking and fiddling and trying to find a way to get my old DOS games to run on Windows XP. Then DOSBox came out.
Any others anyone wants to contribute?