In our 99th podcast - no, really, it is - we try an experiment: the first ever serious Collings and Herrin Podcast. Well, not completely, but we did feel it was time to debate the big issues that divide us - mainly, butter, vaccinations and whether the Masai would enjoy life more with an iPad. We promise that next week's, Podcast 100, live from London's Leicester Square Theatre and recorded professionally, through the desk, will be all fun and laughter. Bear with us. There's some stuff about the goat born with a human face this week, too.