Not necessarily, as I said. I don't know whether the best way might not be to give you an example.
When we talk about things being prevented, we talk about something within a plant. Let's take the example that pest control is one of the prerequisites in a plant. If you actually see there's a record at the plant that there are pests in the plant, whether it's the potential for mice or flies or other pests within the plant, that's an indication that the program has failed, because the objective is to keep those pests outside the plant. That's done through your prerequisite program. I'm simplifying it because that's the easiest way to understand what the prerequisite program does. It would probably say at one point--for instance, for rodents getting into the plant--that your grass be kept short. Lots of plants put gravel out for eighteen inches, and that's quite common today, so rodents can't run around your premises and get in. However, if you were saying that you were catching them in the plant, that particular program wouldn't be working.