
This is a strange book. It’s actually two, really, and although both
are set in the same world with essentially the same technology, they’re several hundreds of millions of years apart and very different in style.
The McGuffin (there’s always one, isn’t there?) is ‘The Bobbler’. It’s a device which can create a perfect sphere of stopped time – impregnable and indestructible. Initially, the device is used to humanely(!) imprison jets, nuclear warheads, and so on. Right up until the point where it’s realised that the ‘bobbles’ have a limited shelf life and, when they burst, the ‘frozen’ time rolls on as if nothing had happened. Boom!
The first ‘book’ in Across Realtime deals with a post-apocalyptic Earth where humanity has been devastated by biological and chemical warfare. A less-than-honest organisation called ‘The Peace’ is suppressing all kinds of technology in an attempt to prevent any more carnage by indescriminately bobbling anyone they don’t like.
The second ‘book’ is set in the distant future. For various reasons, groups of people have voluntarily bobbled and re-bobbled themselves in order to see the distant future. This is an empty world where the bobble travellers are the only humans left in existence. And they appear to have brought a murderer along with them.
The inventiveness in Across Realtime is some of Vernor Vinge’s best – the concept of long distance space travel being made possible by dropping a nuke behind the ship and instantly bobbling the ship so it is propelled across the void for 100,000 years is genius. The future Earth portrayed is both bleak yet unspoiled, and there are some genuinely believable evolutions fifty million years down the line.
At it’s simplest level, though, the book is both an adventure story and a detective novel, with the occasional burst of insight that most Science Fiction authors can only wish for. Across Realtime isn’t in the same epic league as Fire Upon The Deep or A Deepness In The Sky but it’s not far off.