I think the nice thing about this is that the facades usually don’t change: you might add methods, but, once the code is written, it only changes if you’re doin

I think the nice thing about this is that the facades usually don’t change: you might add methods, but, once the code is written, it only changes if you’re doing something major like switching databases. Code that is written and then never changed tends to be less buggy than code that changes, so this sort of pattern tends to reduce bugs at integration points.