I really struggled to book at the hotel I normally use near my employers HQ. They found me a room eventually but explained they were very full as they had a caterpillar conference on.I was somewhat excited by the prospect of my somewhat different fellow guests.Will there actually be caterpillars there? Presumably safely contained in jars to avoid them munching through the hotels plant displays in reception? I also had visions of bearded botantists with magnifying glasses examing their fellow scientists rarer specimens. The scene was truly set.Anyway I arrived to indeed find the place full .But full of salespeople from the cut and thrust world of diggers and bulldozers!In fact, the very things that are one of the threats to the caterpillars world.