I know it is ideal for photoreaders to wait for at least 20 minutes. While your mind incubate the book that you just have photored, can you photoread another book, or do I need to do nothing for twenty minutes?
How about Paraliminal tapes? I haven't tried yet but Paraliminal tapes seem great for the amount of time for incubation.(usually 10-22min) Can I listen to it right after PR? Will it make photoreading step worse?