For me this dialogue is very relevant (as a Westerner with longstanding involvement in Tibetan Buddhism). These materialistic questions are just the kind that I come up with on my own, or field from friends and family (and are probably similar to the ones Ricard would pose to his teachers in his role as the Western 'devils advocate'). The fact that Ricard is so well informed (and steeped in Buddhist culture) makes his responses especially instructive and reliable. (At times the two tread on very subtle ground, and Ricard's lifetime of learning and personal experience help keep it clear and on point.)