Picking a modern leader boils down to a question of which false persona you prefer. At least Brown’s is almost admirably crap. It’s easy to see through it and catch hints of something awkwardly, weakly human beneath. Clegg’s persona is roughly 50% daytime soap, 40% human, and 10% statesman. Cameron is 100% something. He isn’t even a man; more a texture-mapped character model. There’s a different kind of software at work here, some advanced alien technology projecting a passable simulation of affability; a straight-to-DVD retread of the Blair ascendancy re-enacted by androids. Like an ostensibly realistic human character in a state-of-the-art CGI cartoon, he’s almost convincing – assuming you can ignore the shrieking, cavernous lack of anything approaching a soul.