Imagine, if you will, walking in the park. Stopping and sitting, quietly, on a grass bank. The weather is good, so you take off your shirt and carelessly throw it on the rock behind you. You decide to make yourself more comfortable, so you take off your boots. You realise that you shouldn’t have been wearing your boots in such hot weather, but at least, now, you can relax. You unzip them and put them, side by side, leaving the zips undone. You sit there soaking up the sun.