Understood. But as it stands now the CDC has a tough time tracing origins with certainty quickly. If they implemented something commensurate it would be a great help to food safety (and reduction of food waste by not having to overreact and dump perfectly healthy/edible foodstuffs).
I promise you, everyone is trying their best. But the food and ingredient supply chain is extremely complex and doesn't lend itself to strict structure. Tracking an ingredient through multiple vendors in multiple countries while it changes form from raw material to component ingredient to sub-product to product requires a massive effort, care, and judgment. And it's definitely a chain that's only as good as its weakest link, so one small mistake early in the chain can void all subsequent efforts, no matter how diligent. My point is, it's really hard to do well, and nigh impossible to do perfectly.
You've illustrated the complexity in foodstuffs which have complex sourcing histories. Makes sense. I do find it a little incredible how difficult it is to trace an unprocessed good like lettuce, or meat or eggs. At times it gets hard to navigate thru all the middle sellers processors, etc. to trace an unaltered good with a single source down to its source.
