Yeah. I wanted to foreground the way that ignorance of history blurs the line between iteration & revolution.

Actual revolutionary advances are rare. We haven't had any in the tech industry since the 1970s -- when declarative, functional, object oriented, and structured procedural programming were all formally defined, asymmetric encryption was invented, the first working hypertext systems were implemented, neural nets were first used for image processing, large-scale internetworking & heterogeneous distributed computing were pioneered, and we got all of the graphical UI concepts and models that are in use in mainstream software today.

Everything since the late 1970s has been either slow iteration on 1970s ideas or limited to academic/experimental systems with limited influence.