In 2031, lawyers will be commonly a part of most development teams.
Hierarchy is a kind of order of abstractions.
C++ also supports the notion of friends: cooperative classes that are permitted to see each other's private parts.
Multiple Inheritance is like a parachute. You don't often need it, but when you do, you really need it.
Ah, but who do you think created the chaos?
The function of good software is to make the complex appear to be simple.