sawyl | Zeppelin versus not Zeppelin

In order to refute the slanderous claim that I've read nothing but steampunk novels this year, I hereby provide a comprehensive listing of this year's reading categorised by zeppelin content:

Zeppelin Free	Zeppelin Heavy
The Oxford Book of Modern Scientific Writing	The Osiris Ritual
A Mathematician's Apology	The Court of the Air
The Rapture	Transition
The City & The City	Half a Crown
Antimatter	The Kindom Beyond the Waves
Freakonomics	Terminal World
Why Evolution is True	The Rise of the Iron Moon
Dust	Feersum Endjinn
The Black Ship	Retribution Falls
The Girl With Glass Feet	Seeds of Earth
The Elegant Universe	The Orphaned Worlds
A Murder of Quality	Ghosts of Manhattan
Chill
Tinker Tailor Soldier Spy
The Little Stranger
Smiley's People
The Secret Pilgrim
The Ambassador's Mission
The Age of Absurdity
Yellow Blue Tibia
Tithe
White Noise
Falling Man
Hammered
Mezzanine

I have been generous with my criteria for the with-zeppelins group, counting anything that features any form of lighter-than-air aircraft regardless of the duration of its appearance. In most cases, there can be little controversy; most of the books in the zeppelins category contain them in their numbers.

But there are two borderline cases. Firstly, Half a Crown, which features a fleeting reference to Hitler's arriving in Britain aboard an airship; a small thing, but definitely enough to count. Secondly and more dubiously, Transition, which doesn't feature any airships that I recall, but does feature a moment in which the main character looks up to see if there are any zeppelins passing overhead; this is definitely borderline and probably only included to allow Banks to point out the tired old trope of including airships simply to indicate that the book has entered alternate history territory, but this also implies that there could be airships even though there are aren't, and on those grounds I'm including it in the with-zeppelins category.