Possibilities are,
Its a bunch of religious spirits with good intent, but with no real result. However, good results have been evident, and medically documented.
Or its a bunch of converted demons playing positive tricks for 8 months (Highly unlikely)
Or its a bunch of spirits being led by a powerful spirit-guide, who will not reveal his identity to me.
Or its contact from another planet, from aliens who can use voices that we can recognise. (Highly unlikely)
Or its an illness, and I waste all my time here because I have nothing better to do.
At the end of the day, I'm in no position to say what it is. One trace of negativity would have stopped me from furthering this, but I haven't had any. At an educated guess I'd say my hunches are correct.
After this evening's testing, this thread can move on either way. If just a trace of failure is detected, I will seriously be questioning myself and 10 other people, and march us all for therapy.
If all is good this evening, and I do not doubt this, it would be good for a few of us (the fearless) to sort a quiet hall out somewhere. I can travel these days.