Quite.

Then again, DFA, Death From Above, coming out of nowhere plucks the strings of instinctual fears. Things many people fear at a visceral level. Another common one getting eaten by an animal. They are not entirely unfounded fears, they happen, but it is also not entirely rational either.

I know people who simply will not swim in the ocean for fear of being eaten by a shark. Many deep-water sailors refuse to swim in the middle of the ocean. Something about swimming over several thousand feet of water grips them. They can swim in water near shore without a problem but out of sight of land with hundreds or thousands of feet of open water under you is just too much like stepping out into the void for them.

The picture on the cover of "Jaws" might sum it up. A lone figure in a wide dark sea. With a great beast directly below them, unseen, about to eat them alive.

At some level we are still cave dwellers huddling together for safety. Shivering in fear as unseen monsters howl and bellow. We are not armored and we lack any inherent weapons. For most of the history of humanity, many thousands of years, we survived by backing into a corner or climbing a tree and hiding. Waking up to new dawn. Looking around to see who got dragged off and eaten and who survived. Part of our brain is focused on unseen forces that might snatch up away to an untimely end. We haven't changed much.