I once spent some time sitting on a fence. At first it was OK, but the longer I was there the more uncomfortable it became. Eventually, the discomfort of the fence cutting into my flesh forced me to get down, but that created a problem.

I was waiting to watch the annual road race. As I was a kid I wouldn’t be able to see over the fence properly from behind it, and anyway someone bigger than me would jostle me out of the way and take my place. If I stood outside the fence, people said it was dangerous and I should get back behind the fence, like them.

I was good at climbing so solved the dilemma by finding a tree. The vantage point was better and no-one else bothered me.