Instead of using new technologies to preserve for ready discovery material that might in the past never have been stored, or deleting everything as soon as possible, we can develop systems that place sensitive information beyond reach until a specified amount of time has passed or other conditions are met.

I'm interested in helping secure the PC - we need innovation here. It's not just hug your PC, hate the iPhone. In fact I don't even hate the iPhone; I think it's really cool. I just don't want it to be the center of the ecosystem along with the Web 2.0 apps.

Attacks on Internet sites and infrastructure, and the compromise of secure information, pose a particularly tricky problem because it is usually impossible to trace an attack back to its instigator.

I don't know how much thought is behind it, but it seems to me highly effective the way that Facebook will let somebody tag a photo with a friend's name, then others who are a friend of that friend can perhaps immediately see the photo, and the friend, in the meantime, has a chance to wander back and un-tag it.

This whole science thing of working out if players are a little bit tired just gives you an excuse to leave them out.

Wind developers have realised the importance of transparent method of price discovery, which was demonstrated in the solar sector. They realise that bidding brings in efficiency, and tariff is right-sized.

The reason people talk about cable cutting is they imagine the price burden will get so high that people won't be able to pay it. They're missing something: that the actual price of the electronic package is going down. They've got their Internet, phone, TV, all of it. Now people are using more and more stuff for less.

Protect IP (PIPA) and the Stop Online Piracy Act (SOPA) are a step towards a different kind of Internet. They are a step towards an Internet in which those with money and lawyers and access to power have a greater voice than those who don't.