A nurse’s aide threw the contents of a patient’s water glass out a window, the mass of water hitting the ground dislodging a pebble, which rolled across the angled pavement and fell with a click on a stone culvert in the ditch below, startling a squirrel having at some sort of nut right there on the concrete pipe, causing the squirrel to run up the nearest tree, in doing which it disturbed a slender brittle branch and surprised a few nervous morning birds, one of which, preparatory to flight, released a black-and-white glob of droppings, which glob fell neatly on the windshield of the tiny car of one Lenore Beadsman, just as she pulled into a parking space.