> Wait... is the author operating under an assumption that I control (almost) the whole of my codebase, so there is no need to have the boundaries inside of it?

> Wait... is the author operating under an assumption that I control (almost) the whole of my codebase, so there is no need to have the boundaries inside of it? Do you just use all global variables in your code or something? I'm pretty sure you probably have some stuff you use boundaries for even when your control everything, because they're useful.