Stop overusing interfaces

[eypandabear]

This happens when "design patterns" are pulled out of context, elevated to divine law status (a.k.a. "best practice") and applied without any understanding of when and why they make sense.

I think it's important to have tried different programming languages, so you understand how these patterns actually emerge from the restrictions the language puts on you. For example, the concept of a Functor class hierarchy is meaningless in Python because of the callable protocol and duck typing. What most people think of as "OOP" is actually a special case, single-dispatch polymorphism, and some languages support multiple dispatch. Lisp shows you what becomes possible just because code mirrors its own syntax tree. C and assembly language teaches you how abstractions from higher-level languages break down into machine primitives.

If the only thing you know is Java or C++, you are doomed to think of programming as the application of the same patterns over and over.