> ‘Isn’t learning fun? Oh, and here’s another one.’ > DO NOT FEED THE ELEPHANT. > ‘Now that,’ said Susan, ‘is good. You can’t obey it…’ > ‘… because there’s no elephant,’ said Lobsang. ‘I think I’m getting the hang of this…’ > ‘It’s an Auditor trap,’ said Susan, peering at a packing case.

Terry Pratchett, Thief of Time