When a boat dies, you usually have two choices: pay hundreds of dollars to have it hauled away, or let it molder and sink into some secluded corner of the yard. A quick tour of my wife’s parents’ town on the South Shore of Massachusetts, where I moored my boat, would suggest that the latter is the norm: those husks and dark prows entombed in plain sight beside rotting cordwood, abandoned swing-sets. Last year, when I discovered that the oaken keel of my sailboat had rotted irreparably, I embarked on my first experiment with time-lapse photography. I rented for twenty dollars a “reciprocating saw”—the contractor’s principal instrument of demolition—known as a Sawzall. After positioning my iPad on a kitchen chair in the driveway of my in-laws’ home, then unraveling forty yards of extension cord from the garage, I plugged in the nasty tool—part torpedo, part robotic swordfish—and grimly laid into the carapace of the little boat over which I had worried and fussed for almost ten years.