This week, HBO will air George Harrison: Living in the Material World, a two-part documentary dedicated to The Beatles’ guitarist who long played in the shadow of John and Paul. While George slips back in the spotlight, we should highlight his vintage interview with Dick Cavett. Recorded 40 years ago (November 23, 1971), the conversation starts with light chit-chat, then (around the 5:30 mark) gets to some bigger questions — Did Yoko break up the band? Did the other Beatles hold him back musically? Why have drugs been so present in the rock ‘n roll world, and did The Beatles’ flirtation with LSD lead youngsters astray? And is there any relationship between drugs and the Indian music that so fascinated Harrison? It was a question better left to Ravi Shankar to answer, and that he did.