YAGNI: You Ain't Gonna Need It. Sound bites are great - short, sweet, clear, and simple. Just like real life, right? Seductive simple certainty is what makes slogans so problematic. Uncertainty and ambiguity occur far more frequently in the real world. Context and nuance add complexity, but not all complexity can be avoided. In fact,
Separation of Concerns is a well-known concept in application architecture. Over the years, application structures have evolved from monolithic to modular, using techniques such as encapsulation and abstraction to reduce coupling and increase cohesion. The purpose of doing so is quite simple - it yields software systems that are easier to understand, change, and enhance.