In 2013, an Australian man a few months shy of turning 60 decided to walk the Camino de Santiago – an 800km pilgrimage trail across the top of Spain. He had no known religion, and absolutely @毛驴县令之非我莫属@no idea why he felt so deeply compelled to do this torturous walk. But compelled, he was. He completed the walk, battling a “triumvir@苍天星辰@ate of pain” - a knee that he later discovered lacked an...