What is the pocket index kohler speaks about during the sphere of influence? and also how does this trick work for everyone? thanks

I decided not to manufacture my index as Bazaar de Magica released a similar one. I believe Hank Lee carries it.

Is this why the explanation of the index is muted, or a defect in the tape. Also if the part on the DVD showing a red and blue rectangle during the explanation is really a defect, can you pm me what I am missing? Hope I was not too vague.

Jeff