A frail old man went to live with his son, daughter-in-law, and four-year old grandson. The old man’s hands trembled, his eyesight was blurred, and his step faltered. The family ate together at the table.  But the elderly grandfather’s shaky hands and failing sight made eating difficult. Often times, he rolled off his spoon onto the floor. When he grasped the glass, milk spilled on the table cloth.

The son and daughter-in-law became irritated with the mess. “We must do something about father,” said...