This podcast episode features a real gem, Jaap de Waard. Policy advisor at the Ministry of Justice and Security – and best known for his world-famous ‘knowledge pearls’.

Jaap selected three pearls for the Criminologist that are discussed in this episode. It is about the influence of knowledge on policy and how crime has developed over time. We use many interventions to combat crime. But what actually works – and what doesn’t? A Clockwork Orange and the Ramones also appear, and we hear how Ad Melkert was charmed by Andy Warhol. (The Podcast is in Dutch.)