The whole carriage lent forward in anticipation as the very old, very frail man tried to sit down. His legs seemed un-bendable and unco-operative. He swayed as the train began to pull away. We willed him backward into the safety of the seat with our eyes and imagined him falling. Finally, he plopped down, with the caring assistance of the stranger next to him. A silent but palpable cheer rippled through the vestibule. We felt good.