Good stuff in this week's Economist about the expected battle between Nokia and Microsoft for the soul (and operating system) of the mobile phone. Of course (and as the article acknowledges) it's not just between these two companies: the whole mobile industry also has to wage a battle with a sceptical public, to persuade us of the merits of souped-up mobiles. And a few other players - like Sony Ericsson and the Symbian consortium - would also like to think they have a big role to play. But it would be naive to think that there isn't going to be quite a clash between the big, arrogant giant of the mobile world, and the big arrogant giant of the PC world, as their worlds (at least in part) collide.