Forty years ago man first landed on the moon. The historic significance of that one small step was immediately apparent, watched by an estimated television audience of half a billion people around the world. Twenty years later, as a postgraduate researcher in communications I was dabbling with ideas around digital television, video, multimedia and networks. The internet and hypertext were already available. If someone had not come up with what we now know as a web browser, someone else would have done. Even as the web was being conceived there was little indication quite how important it would become, or that it would start to challenge television or even printing as a medium. It’s difficult to imagine how communications may change in the next twenty or forty years. It seems technologically inevitable that the television of today will seem as primitive as those grainy black and white pictures beamed back from the moon. Yet they will remain among the most amazing images ever transmitted.