I found this way of thinking - where you pool risks across the entire population - never particularly useful.

For example, the risk of drowning, here quantified as "1 in 1,128" is actually pretty much 0 for people who don't go swimming, and probably vastly higher for people who frequently swim in lakes.

Similarly, your risk of getting eaten by a shark - as miniscule it may be in the grand scheme of things - is profoundly higher when you're actually in the water somewhere in South Africa or Australia.

So in order to truly understand risks, one really needs to take one's personal setup and situation into account..