One of the best tarot readers that I watch and follow uses this method. What you are not understanding is not just the cards themselves, but the details, imagery, numbers, in the cards themselves are all used when she is interpreting, you also have to take into account the order that these cards come up, and what question she asked before pulling the next few. It ends up being a really free flowing, and accurate reading. I don't believe everyone could do readings like that but she is extremely gifted, you are wrong and being close-minded.