I was just re-reading Jingo (for the nth time), which I still think is among TP’s best books, and realised there’s a pretty major flaw in the plot.
The only reason Vetinari and Leonard travel to Leshp in the Boat (“It’s submersed in a **marine **environment so I call it the Going-Under-Water-Safely-Device.”) is that Leonard lets slip that he “did a few sketches there some years ago”, hence allowing Vetinari to set his whole scheme into motion.
Now it seems inconceivable that an island that appeared in Leonard’s lifetime should be totally unknown to anyone else, and in fact at the end it’s clearly stated that Leshp only rises at “enormously long intervals”. So what gives? Has Leonard discovered immortality? Am I just nitpicking needlessly at what is still a really good read, or has this struck anyone else?