A long, long time ago, there used to be the maxim that 'photos never lied'. If you wanted proof that something had happened, all you needed to do was to present a photograph as proof.

That was then. Then came the art of the photo-trick, where by careful photo-montage - cutting and pasting cuttings from other pictures - you could create your own version of reality. But still, this art was restricted to photography experts, and even then it was still limited to certain scenes. So photos...