Well Tarot works, and that seems so far to be unexplainable scientifically. It works and it works consistently, so it cannot be mere coincidence. To me that means that when I read I am connecting to something greater than myself, but people who have passed over, no way. If I thought that was it, I'd quit fast. That would really be WAY too scary for me.
I personally believe my answers are coming from there. It is something higher (call that G-d or angels...). They come from a place that to me forms part of my connetion to this world and to everyone in it. Agreed--a Tarot reading is NOT a seance.
Reading, I think, is about learning to use our intuition as well, and that is related to our psychic powers. And we all have them and can develop them....there are so many parts of our brains we don't use and that is part of those parts. We all have them and we can all develop them. It's not even particularly supernatural. It's part of what it means to be human.
Babs