"They largely work" doesnt run counter to my argument. I am saying there is no way around common sense to prevent food poisoning in an individual. Being able to

"They largely work" doesnt run counter to my argument. I am saying there is no way around common sense to prevent food poisoning in an individual. Being able to lower the overall risk doesnt change that. You can get food poisoning in the first world by over relying on regulation when you should have known better and you can avoid getting food poisoning in the third world by applying common sense. As long as you can afford to which most people there cant. If tainted water is all you got, you will get sick. We are making different types of arguments, being able to lower the overall risk doesnt mean common sense / "rule of look" is worthless. Nor does it become worthless in an unregulated environment.