that really matter, Big Days when Something Momentous Happens. The rest—the vast majority, tens of thousands of days—are unremarkable, repetitive, even monotonous. We glide through them then instantly forget them. We tend not to think about this arithmetic when we look back on our lives. We remember the handful of Big Days and throw away the rest. We organize our long, shapeless lives into tidy little stories, as I am doing here. But our lives are mostly made up of junk, of ordinary, forgettable days,
