The elaborate project now unfolding to move four buildings on Richard and Jennifer Schifter’s property on a remote and windswept promontory at the extreme southeastern corner of Chappaquiddick, including an eight-thousand-square-foot home, is riveting. This very big project for a very small island has already cost the homeowners millions of dollars as they engage in a spellbinding race against nature to move their summer home and assorted other structures back from the edge of a rapidly eroding cliff.