Part two is the faction – taking one of them and sometime balloon passenger Sarah Bernhardt and putting them together in a case of unrequited love. This might have seemed perfectly fine, although I didn't enjoy it knowing what the greater part of the book was going to be – the final panel of the triptych, where Barnes introduces us to his thoughts on grief. His wife, and companion for almost half his life at the time of her death to cancer, is only credited with a forename in the dedication, but she was Pat Kavanagh, literary agent to several esteemed people (I remember Dirk Bogarde dedicating a work to her once he had turned from acting to creating books).
These three sections, with their dimensionally-minded names, work as linked essays, inasmuch as they borrow recurring details, and throughout is the idea Barnes utilises of putting two things together and getting something else. Add the science of photography to the magic of ballooning (or is it the other way round?) and you get the first recorded snapshots of God's eye view on the world. However that idea does not seem to fully work with the third section. It's obvious from the calmly declarative, exceedingly clear and honest writing of the grief section that he saw/sees his marriage as just that – the birth of something greater than the sum of its parts. He even says that ''what is taken away [[by death]] is greater than the sum of what was there'' and that this is not mathematically possible. This seems wrong, from my limited experience. Isn't it better to think of love as being the mathematically impossible 'one plus one equals one'?
Barnes comes across as quite an anecdotalist, even if he is mostly concerned with discussing other people's attitude to grief in a clever way of disguising how open he is being about his own. In one thread he talks of people being incomplete and not being able to finish the day, declare this to be this, or so on, without the missing person also knowing what has gone on. This I think is closer to my own opinion – proof that this book, or this essay at least, is definitely one that will rattle around your brain for perhaps too long – and where the 'one plus one equals three' idea is flawed. A loving couple minus half of it is at most a half – but Barnes seemed to say that might be half of three.