There's a manner of thinking wherein a car's engine is a part that you replace if it breaks. The fact that it has a lot of components inside it does not matter,

There's a manner of thinking wherein a car's engine is a part that you replace if it breaks. The fact that it has a lot of components inside it does not matter, from a certain point of view. One or a million, if it breaks, you yank it and replace it. Another point of view of course is that each piece is one more way to break.