tl;dr:“If you've ever worked on refactoring or improving performance in a software system, you've probably run into a particular frustration: abstraction-heavy codebases. What looks like neatly organized and modularized code often reveals itself as a labyrinth, with layers upon layers of indirection. The performance is sluggish, debugging is a nightmare... This leads us to an important realization: not all abstractions are created equal. In fact, many are not abstractions at all—they're just thin veneers, layers of indirection that add complexity without adding real value.”