Sure, but what I'm saying is that even at zero tolerance there is really in a sense a low-level presence, because the presence just might not be detectable.
Let's say that current testing can test to one part per 100 million or one part per billion. If there were one part per 10 billion, testing might not be able to pick that up. So I think it's quite valid to say that zero tolerance is just not realistic, and especially not when you're looking at the supply chain for agricultural products.
I'm wondering whether you would agree that an absolute zero tolerance is probably unrealistic. I don't think we can find that anywhere in any thing.