As recently as 40 years ago, we didn't have much need for the word "content."

But as soon as we started delivering the same information via multiple channels, we needed a way to identify the essential elements of content assemblies and to work with them independent of their various manifestations in information products. So the concept of "content" was born.

Joe Gollner has worked with content from its earliest days and has crafted a multi-layered definition to account for its many aspects.

https://ellessmedia.com/csi/joe-gollner/