I'd been wondering how, when the time comes, we're going to transport the sundial to our new home. It's not just any old sundial- you see- but a significant sculpture by an important late-20th century artist and can't just be abandoned to whatever fate its new owners might whimsically decide for it. It's also a solid piece of kit- a lump of carefully selected stone resting on a plinth of built brick. How should we lift it? Would sledge-hammers be needed- and the expertise of muscled men in navvy boots? I was assuming it was cemented in place with a steel pin joining its parts but when I went out to test the assumption I found that the artistic bit just lifts away from functional bit with nothing securing it in place except its own weight.
And the moral of the story (which may not apply to coups in African countries or negotiations within the European Union) is things don't always turn out to be as complicated as you think they're going to be.