Scrolls, books and screen have all in the common the alphabet, algebra and numbers: their content has not changed, apparently. We are still the alphabetical culture.
It is easy to see how the different tools change the way we interact with content. For example, we can see that browsing a book is different than browsing on a screen, and it’s clear how text and images can be manipulated across the different devices.
What is less apparent, but not less relevant, is how the different reading experiences affect the development of knowledge acquisition and ultimately cultural spread in the community. The tools don’t simply cater the content, they affect its quality: they are themselves content.