'It seemed to me,' said Wonko the Sane, 'that any civilization that had so far lost its head as to need to include a set of detailed instructions for use in a package of toothpicks, was no longer a civilization in which I could live and stay sane.'

On a chainsaw:

Do not attempt to stop chain with hands.

Regulation

Sometimes on products I buy you see things like "don't put the plastic bag over your head" or "don't leave unattended around children". I always ask myself who that's for and then I remember the USA exist.

Edit: Also, we have a proverb here about this exact kind of warning. It goes something like this: "This is an American-grade warning, like not to put your dog into the microwave."

Allergy warnings on products that are very clearly are made of potential allergens, such as a peanut allergen warning on a jar of peanut butter.

The Great Filter

Because he didn't? Judaism evolved out of older henotheistic Canaanite religion, which evolved out of even older polytheistic Canaanite religion. Which was influenced by contact with outsiders like Mesopotamia and Egypt.

The problem with this was expalined a while back when Costco had to recall butter because the packaging didn't say it contained milk. Sure someone who's deathly allergic to it will be careful, but these lists are more or less blindly get inputted into other systems. You'd be surprised how many businesses buy from Costco in bulk.

C'mon as a child I didn't know I shouldn't swallow silica gel or put a nylon bag over my head, I learned those from reading the warnings or my parents telling me what they read.