A commonly-held misbelief is that science fiction is about predicting the future. It really isn't. However, this doesn't mean that SF views of the future are not useful in hindsight. They are very good for highlighting the ways in which the imagination misfires. One of my favourite examples was a James Blish novel, where the author pointed out that electronics would be useless in Jupiter's atmosphere, because the immense pressure would collapse the valves (vacuum tubes) that were required for pre-transistor electronics. But the particular case I would like to use here is more about SF's approach to information. Science fiction from the 1960s and early 70s had a huge miss in envisaging something that is commonplace now - ready access to high bandwidth information flows. A classic example of this was on the original series of Star Trek, where Mr Spock is regularly seen inserting little plastic rectangular objects into a console to access different data stores. Of course