It's time to come up with what I'd call a Plastic Chain Index. For any given edible item, a very low plastic chain index implies that it would only have plastic inadvertently absorbed from the environment, whereas a high one would be e.g. those super hot French fries rolling in plastic. If you're optimistic, this will usher in easy measurement, widespread awareness and consumer enlightenment. But realistically, we wi…
Indeed. Until then we hapless individuals trapped in the present will have to resort to heuristics. The best one I can think of to start with is avoid processing. The more processed a food is the more opportunities it had to potentially be contaminated. Contamination can happen with raw ingredients too, but at least that's fewer opportunities strictly speaking. So, for example, in order from most dangerous to least:…
Indeed, because restaurants generally source their food from better sources than a regular consumer can (many times, straight from the farm), restaurant food is arguably safer than "raw" food you can cook at home.
Thus, french fries from a restaurant would be at least as safe as french fries you eat at home.
Another paradox that would violate your heuristic: frozen fruits and vegetables are more nutritious, and cleaner, than "fresh" fruits and vegetables in the grocery store.