Dr. Jim and Brittany are back in full force and decide to tackle the exaggerated life and mean reversion of none other than Justin Bieber! Belieb it or not, but as they dive back into volatility, one of his biggest hits lays the groundwork for today's lesson. Brittany knows that volatility increases and decreases, but today she learns that the more contextually correct terms are. Dr. Jim also educates Brittany on volatility's own 'mean', which very much has a magnetic pull to it - if IV contracts it has a tendency to then expand, and if IV expands it has a tendency to then contract. Dr. Jim wrapped up today's segment by showing Brittany the combination she now possesses.