Maybe the plastic is telling us to not worry about the plastic?
It's interesting to wonder that if something in the environment did cause widespread cognitive impairment, how long would it take for us to realize it was happening?
It's interesting to wonder that if something in the environment did cause widespread cognitive impairment, how long would it take for us to realize it was happening?
If you ask the average person today why we stopped putting lead in gasoline (or why we started, but I digress) I doubt you'll get a consistent or correct answer. I've no doubt the same could be said with respect to these plastics in fifty years.
It was a technical issue. The lead prevented valve seat wear. IIRC, Honda was the first manufacturer to use hardened valve seats that didn't need lead.
So, ultimately, you can say that it was profit, but then every human activity can be reduced to profit and it no longer means anything.
no, that has been debunked.
see https://www.thenation.com/article/archive/secret-history-lea...
Yes, lead has anti-knock properties. There are other ways around knock, including chemicals that are described in your link. There was no way around accelerated valve seat wear until hardened valve seats became universal, which finally happened because lead was being banned.
I wonder if the Romans knew they were getting dumber from sweetening their food with lead.
[1] https://apnews.com/article/election-harris-trump-women-latin...
We wouldn't. Not as a society at least. It would be "fringe conspiracy theories" to say such things to protect big plastic or something.
Potentially.