Sure, but you can’t control the dose on an entire population. Let’s say only 1% of people get brain cancer because of their habits/lifestyle. That’s still unacc

Sure, but you can’t control the dose on an entire population. Let’s say only 1% of people get brain cancer because of their habits/lifestyle. That’s still unacceptable, despite 99% not getting a dose that’s lethal. An example of this type of selective poisoning is cashiers handling receipts laced with BPA all day.