An enormous black walnut tree hovers over our backyard. During the summer, it provides welcome shade. When fall comes, however, the tree drops tangerine-sized nuts, ready to bean any unsuspecting visitor. You’re sitting, casually trying to enjoy the last few rays of sunshine before the cold fronts move in — then suddenly the wind ruffles the tree branches, and the bombardment begins. Nuts drop to the ground, clanging off lawn furniture and bouncing off flagstones, startling the unwary, and you realize that but for good fortune they might dent your noggin and leave you dazed and spreadeagled on the cooling ground.
Well, maybe it is a bit like the presidential campaign, now that you mention it.