Someone like Boris Johnson is reluctant to answer questions about ambition because then the story becomes all about his ambition. Sure, he's got ambition - that's no secret at all. But also, he's very strongly motivated to try to get the kind of Brexit he believes in.

Twitter is a really interesting, useful tool. In lots of ways, it's an exciting place to be. But it's also a megaphone for the kinds of things people used to shout at their telly - and now they send you a message.

Our political system seems to be proving itself almost incapable of dealing with what's been put before it. The decisions it is making, or fluffing, are so vital and yet are inevitably so compromised by the endless political calculations of all involved.

It's worth knowing that there's very different sets of regulation for the print press and for broadcast media. They're different things, particularly during campaign periods.