I double on EB & DB. I agree that playing acoustic jazz on the DB does require that you play "more notes" (as you are arpeggiating the chord changes), but I also play in bluegrass groups on the DB, and in bluegrass you play a lot less notes, and are much more repetitive in your note selection. It really comes down to the genre of music and what is expected of the bassist in that genre. To be fair to all concerned, in the music that RC is referencing, the bassist is required to play a repetitive figure. It could be the producer, or the artist making the request, but the bassist is playing what he or she has been told to play as per the session. Just my two cents. RC is one of the last great jazz musicians who can state that he was part of that golden age of jazz that ended in the 1960's. He's probably the most recorded jazz bassist, including Ray Brown and Paul Chambers, although I could be mistaken.