The achievement of philosophers of space and time over the past 30 years has been extraordinarily important and far reaching. The dramatic claims made by Einstein and many other physicists about the death of Newton's absolute space have been rebutted. Mach's famous reply to Newton's bucket argument is driven by a strict epistemological assumption. Mach's general philosophy of positivism had led him to a specific view of space and time that philosophers call Relationalism. As Earman and others have argued, relationalists need to show not that the rotating stars would influence the water in the bucket, but that rotation would account for all of the observed concavity. In this ontology, the only things that exist are bodies and the relations between them. The twisting rubber sheet gives a picture of Mach and Einstein's view of Newton's bucket.