Hierarchy is a kind of order of abstractions.
In 2031, lawyers will be commonly a part of most development teams.
The task of the software development team is to engineer the illusion of simplicity.
C++ also supports the notion of friends: cooperative classes that are permitted to see each other's private parts.
All of life is iterative. It goes back to the point I made earlier, which is you can't a priori know enough to even ask the right questions.
A fool with a tool is still a fool.