I Wasn't Scared

A brother and sister go over a rusty fence in search of fishing. They're not biting. However, they do find why the area is posted for people not to enter: a small, torpedo-shaped bomb from when it was an artillery-testing ground. When the boy unscrews a nut. Smoke comes out. They flee. But the boy has left his fishing rod. He goes back, while the girl goes in search of adult help.

British comedian David Mitchell has a lovely bit about how he was afraid to look at the sun when he was a child, but walked outside with his eyes downcast. All those things we are told not to do: don't eat before swimming, don't cross a highway, and so forth.... there are two types of children: the naturally cautious, and the unheeding. All these warnings, Mitchell points out, are calibrated for the unheeding. He was never going to tear across a six-lane high; just the existence of a highway in his count made him want to stay home.

And still the unheeding go on their merry way. Until something goes wrong.