Whether for January blaze or May rain, gravity built the roof. Men drive miles every day to dig a hole to fit a building, gravity being multi-storied. A chair is only as good as the weight it carries. The heart tug in the astronaut film is the gravity of Mother Earth. This Saturday the airliner flying over Rosanna has gravity written all over it. Even the lorikeets in autumn trees below laugh and trick for good reason. Leaves spiral downwards in the time-honoured fashion. Still life with apple. Heavy thoughts at the bowl are eased by assumptions of an S-bend.