I was reading a thread elsewhere a while back and a woman had evoked the spirit of New Avatar Power and she said the spirit of that Grimoire was very tired. Said the spirit told her that "the time had came and gone" for that book. Basically she was saying that NAP was loosing its power. I still use the book and it works but it has got me to wondering if a grimoire can lose its power over time? Not just NAP but any grimoire. I just thought she was full of BS but I thought I would ask. Your thoughts?