Mambo Chicken is not sci-fi, because there is nothing fictional about any of it. It is a truly fascinating book, and this from someone who conscientiously buys pop science books only to fall asleep and start dribbling all over page 39.
Regis sets about acquainting the reader with just how bizarrely the thought processes of the world's most brilliant scientists operate, and some of the technological visions they are wont to put forward, without the slightest regard for realism or potential for success. There's the 'wrap the sun in a big insulator jacket and harness its heat' idea, space colonies, Olympics in space (which one physicist predicted as achievable for 2005), mind-downloading and countless other truly incredible visions for the distant future.
Regis narrates these stories very adeptly - not least because he recognises that a certain amount of humour and gentle mockery is needed to keep the reader from thinking he has stumbled across Silicon Valley's version of Mein Kampf. Every page is thought-provoking (if only the thought 'you mad, mad people'), and if nothing else I'm looking forward to the brain-copy-on-a-floppy-disk that I am promised, as a backup every time I forget my own bank PIN number.