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.
You have to imagine it possible before you can see something. You can have the evidence right in front of you but if you can't imagine something that has never existed before it's impossible.