i have personal experience with this i have seen it done to people with shakti before and when my dad started to manifest kaal bhairo and hanuman i did the same for him they answered questions and jharay people who were sick the reason for having someone with you it that while manifestation is going on you don't know what happens you need some one with you to tell you what happen and what was said while you were in a trance and i find that though the devis and devatas want to help they may help some one who want to do bad but in our eye it is a bad deed but in the devatas eyes they see it as helping so you need some one to help them distinguish the difference but thats been my experience if anyone else had a differant experience please let me know