> most code you will encounter is object oriented. Well - most code you encounter was written in a language that was designed for object oriented programming,

> most code you will encounter is object oriented. Well - most code you encounter was written in a language that was designed for object oriented programming, like Java or C# (and, really, Python and Javascript). That doesn’t mean it’s actually object oriented or particularly well designed. I’ve been working mostly with Java for the past 20 years and every single Java-based system I’ve inherited has been the same big-ball-of-mud as the others, with almost every function declared static and classes declared because Java doesn’t work if you don’t type “class” somewhere. It’s never reusable, never unit-testable, and never modularized.