The Difference Engine is an alternate history novel by William Gibson and Bruce Sterling. It is a prime example of the steampunk sub-genre; It posits a Victorian Britain in which great technological and social change has occurred after entrepreneurial inventor Charles Babbage succeeded in his ambition to build a mechanical computer called Engines.
The fierce summer heat and pollution have driven the ruling class out of London and the resulting anarchy allows technology-hating Luddites to challenge the intellectual elite.
A set of perforated punch cards come into the hands of the daughter of an exicuted Luddite leader who sets out to keep them safe and discover what secrets they contain. Download and start listening now!