Earlier quoted context omitted.
No it's simply an example of people who live in a particular environment being well aware of the risks associated with it. For example, before I worked in the Peruvian rain forest I would not have guessed that being hit by a brazil nut was one of the commonest reasons for accidental fatalities in the forest.
Good grief, do you have to wear a helmet any time you're in the forest?
No, but the rule of thumb was never to go into the forest when there was a storm with decent winds.