“…Crusoe would have appreciated that the hot-weather survival gear, known as SKRAM bags (Survival Kit, Ready Access, Modular), issued to US military pilots, includes both a sun-protective hat and topical sunscreens. After all, Crusoe equates the importance of blocking the sun to staying alive: “At my back I carried my basket, and on my shoulder my gun, and over my head a great clumsy, ugly goat’s-skin umbrella, but which, after all, was the most necessary thing I had about me next to my gun.” (p105)…”