he is interviewed by adrianna huffington founder of "the huffington post." >> host: mark thank you so much for joining us and congratulations on the book. i loved reading how it started as a series of lectures that you gave at oxford and tell us about that, how it happened. >> guest: i was the chief executive and i knew i was going to be leaving but i was right in the middle of the job and i got a phonecall from oxford university who said would you like be a visiting professor in the art of public persuasion and i said no. i didn't know anything about it. and then i kind of spent about a week, you know the thing sticks in your head and you kind of just letting it seep and by this point it up in 30 years since i was in broadcast journalism. i have done a lot of reporting and edited a lot of political programs and i thought i had seen changes in the way politicians speak, and the way the media reports what they say, how the media works and changes in public attitudes and maybe there was something to say so i said yes and i thought i will be leaving the bbc and the games in 2012 were in