As for the Parthenon Marbles themselves, it is irrelevant whether they would have been in a worse condition had they stayed on the Parthenon. The point is they were removed. Therefore the question becomes, can the Greeks be "trusted" now to look after their own property, not whether they could in the past. Clearly neo-imperialists like Graham-Dixon and Michael Daley believe not, and that the British are better at it. But before they come to this conclusion it would be worth contemplating the decrepit state of most British gothic churches and cathedrals - hardly evidence there of British ability to care for and preserve ancient art.
University of Hull
Scarborough, North Yorkshire