This summer, people started building crazy cairns (rock piles that mark a trail) all along the bike trails in the mountain foothills above my home. At first they would simply gather rocks and stack them tall; then as months wore on, they grew more elaborate. I started adding sticks for arms and turning them into cairn men. Sometimes others would remove the sticks or knock over the piles, but someone else would always rebuild them. Now summer has passed, most of the leaves have dried up and dropped from the sky, and despite a long, gorgeous autumn, the snow can’t be too far away. I’ll still run the trails, but…