What’s so undesirable about teaching some technology in school and that technology changing over the years? Heck, I took computer hardware vocational classes in

What’s so undesirable about teaching some technology in school and that technology changing over the years? Heck, I took computer hardware vocational classes in high school, and we learned about ISA, ATA, and PCMCIA. I would never bemoan either learning those things or those things changing. It’s not like that learning was made useless when the technology changed.