This makes sense to me, and reminds me of the more familiar variation in rates of chage in building business systems. I think I first came across this in the writing of Ronald G. Ross in relation to his business rules approach. At the bottom layer, changing at the slowest pace, are the core business terms/ concepts, above which sit business rules, and above those business processes, and above those user interactions, which change the fastest of all. The current trend we see to provide agentic end user access to business processes formerly intermeidated by web pages is an example of the friction from above placing demands on the levels below to adapt. If the business process layer isn't set up well to serve completely new kinds of user interatction, then it will come under pressure to be refactored in order to do so from the faster pace of change at the higher layer.