Nearly an entire generation doesn't know what the back cover of their favourite albums look like(course I missed the golden age of album art. Small CDs (also the weird long box eta)... and before that the serious dark ages of cassette tape fold outs.)
Also it reminds me when I once pondered being a writer for video game manuals. There's another form that seems to be falling by the wayside, both because distribution is so often digital (and publishers were cheaping out even before that) and the trend is either for in game tutorials, or genre instances that need less explaining. though super early games sometimes needed the manual along with the color art to better supplement the sparse graphics and sound.