What's important at the grocery store is just as important in engines or medical systems. If the customer isn't satisfied if the stuff is getting stale if the shelf isn't right or if the offerings aren't right it's the same thing. You manage it like a small organization. You don't get hung up on zeros.
Women have been taught that for us the earth is flat and that if we venture out we will fall off the edge. Some of us have ventured out nevertheless and so far we have not fallen off. It is my faith my feminist faith that we will not.