My father was a packaging engineer and he said packaging has three purposes:
1. Keep stuff in. Generally the stuff the label says is in the package.
2. Keep stuff out. Everything else.
3. Keep the idiots in the government happy or at least give them the chance to fake doing something to rationalize their jobs. This after he designed a seven-layer bag for an agricultural product. The inside layer did #1, the outside layer did #2 and the other five layers were there to cover #3.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk