Global warming, you don't win it. It's this weird steady-state issue that's going to be with us for a few thousand years.

Files on iTunes - and thus iPods - are incompatible with everything else. Applications on iPhones may only be sold and uploaded through the iPhone store - giving Apple control over everything people put on to the devices they thought they owned.

Open source is a beautiful way of collaborating; but what's happening on the free Internet is more akin to the 'crowdsourcing' of journalists and other content creators by advertisers who no longer have to pay them - only the search engines that parse their articles.

I don't think tablets are where we should be focused. But I do think they could end up being an efficient way of delivering textbooks. They're just not really that, yet. There's all sorts of poisons and mined minerals and carnage that goes on to make a tablet. Way more than to print a book. Or a bunch of books.

It's easy to make fun of AOL's pending purchase of HuffPo. Just like AOL's purchase of TimeWarner, here we have a new media company - Huffington Post - fooling an old media company, AOL, into overpaying for something that has already peaked.

We've been taught that the renaissance was one of the great golden ages of civilisation. The renaissance was not a golden age, it was the end of a golden age.

The industrial age was not about craftspeople trading peer to peer. It was about stopping that. You weren't supposed to be a craftsperson, you were supposed to be an employee.