The clip begins as an elegiac sentimental journey. Starting with the early days of the Arpanet, we’re whizzed through Dr Strangelove-style presidential war rooms and the advent of home broadband in a trice. Blinking into the sunlight, we arrive two minutes and thirty seconds later at the 100 million site world wide web we know today.

It’s a well made clip that transmits a strong sense of just how far we’ve come in a short time. But the next 40 years promise to be even more exciting. Especially if Arpanet mover and shaker Leonard Kleinrock’s predictions of a web that talks back to you can be believed...

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