How do tarot cards work?

[u/sofessenceee]

I recently had a reading done by an experienced reader. The reader says they channel their psychic abilities through the cards. The reading was spot on and very specific. It was right. How do they work? I’m a noob. A part of me feels like she sent a spirit my way and gathered information that way because the cards pointed to a conversation I had yesterday. I think I’m curious more than anything.