In this chapter, we covered a vast amount of theory and practical skills. We covered the LoD (or principle of least information), all SOLID principles, the principle of abstraction, and a couple of key principles from the paradigm of functional programming. Even if you don't remember all of the names, you will hopefully remember the underlying knowledge and key lessons that each principle encapsulates.

Programming is as much an art as it is a science. It involves balancing all of these principles in the pursuit of crafting truly balanced abstractions. None of these principles should be considered hard-and-fast rules. They are merely guidelines that will help us on our journey.

In the next chapter, we continue this journey by exploring one of the most challenging aspects of programming, both in JavaScript and outside it: the problem of naming things.