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[xise]

My guess would be that a lot of people fear feeling energies. More than one person that I know, as they read the material upon my suggestion, have felt energies in their chakras, and usually, if they're not used to feeling energies there, it can be quite a scary and unfamiliar feeling. There also could be an additional fear of certain mystical experiences and I think reading the Ra material for the first time is certainly a mystical experience - I know personally I have a small fear having my third eye open to the extent that I can see negative entities. 

I don't really fear reading spiritual philosophies that involve a download of information, and my take on the energies is that it's a full-scale download of information, into your conscious and subconscious mind, because there is so much there. Actually, the subconscious stuff and fear of mystical experiences would fit with the recent Ra-related dream I had as well - it seems Ra likes working in Dreams and with the subconscious. 

But to bring it back the OP's title, I think the way you assess the material is by the philosophy - does it make sense, does it resonate, does it lead to absurd/terrible actions, etc. Ra makes clear at multiple times that the important material is the philosophical material about spiritual evolution, and as such I think that's the area you assess it by.