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We're in the state once described by that great scholar of cyberspace, Manuel Castells, as "informed bewilderment".

The idea is that our short-term memory can only hold between five and nine "chunks" of information at any given moment (here a chunk is defined as a "meaningful unit"). So, when trying to decide how many big ideas about the internet would be meaningful for most readers, it seemed sensible to settle for a magical total of nine. So here they are.

On a scale of one to five! You have only to ask the questions to realise the fatuity of the idea. Printing did indeed have all of these effects, but there was no way that anyone in 1472, in Mainz (or anywhere else for that matter) could have known how profound its impact would be.

He’s recorded his lectures on video and uploaded them to YouTube for his 28 students to watch at home. Then, in class, he works with students as they solve problems and experiment with the concepts.

The Digitised Manuscripts web pages give access to fully digitised manuscripts held at the British Library, with their descriptions