I challenge you to go to any industrial farm. You'll see anti-microbial shoe dips, shower in shower out, plastic suits. Whenever we get scientists visiting our farm, they invariably remark about how seemingly nonchalant we are about bio-security. The industry is paranoid about bio-security because their animals and plants are fragile. If our farm plants and animals had as dysfunctional an immune system as that found in industrial facilities, I'd be paranoid, too.