The idea behind six degrees of separation is a wild one. At any given point, you could chain yourself to someone with no more than five people. It’s scary, and you might think it’s inaccurate. But situations like what led Pharrell to Britney Spears might just change your mind. In a 2014 interview with VIBE Magazine, Skateboard P talked about everything that led to the Neptunes-produced pop classic “I’m a Slave 4 U”. It all starts with Jay-Z. Som…