I think it depends on how generally the [whatever] is written. I'm working through SICP right now and learning all kinds of concepts 100% relevant to today, bec

I think it depends on how generally the [whatever] is written. I'm working through SICP right now and learning all kinds of concepts 100% relevant to today, because the textbook was written to convey general ideas instead of their specific implementation. And that book was written in the '80s, which is practically forever ago in the CS world.