"From the award-winning, bestselling author of Cod--the irresistible story of the science, history, art, and culture of the least efficient way to catch a fish. Fly fishing, historian Mark Kurlansky has found, is a battle of wits, fly fisher vs. fish--and the fly fisher does not always (or often) win...The unreasonable virtue of fly fishing marries Kurlansky's signature wide-ranging reach with a subject that has captivated him for a lifetime--combining history, craft, and personal memoir to show readers,devotees of the sport or not, the necessity of experiencing nature's balm first-hand"--