Imagine you are floating down a river wearing a thin coat of armor. You jostle against rocks as the current pushes you down a tight channel. Sometimes you’re able to grab onto a plant or branch hanging in the water. This gives you a sense of calm and safety as the water rushes around you. Clinging to a branch or rock, you finally have time to sneak a snack before carrying on your never-ending float. Now, imagine you’re the size of a penny. Imagine you’re a caddisfly. Although
