Yes, I have given first names. Not so much surnames but that's my fault, as I don't ask spirit for them. Sadly I don't know why some messages are so vague there could be any number of reasons. The medium may not be asking for the info is one. The spirit may want to pass on other information which they consider more important. Or, the medium isn't a medium. As a psychic they may assume the info is coming from spirit when it's coming from the living recipient instead. A lack of training and development may be another reason. As for messages being trivial in nature - Only the recipient can say if their message is trivial or not. Being an observer, the information may not be what we would like to hear from our family or friends! Spirit use a mediums unconscious mind as a frame of reference. If a medium is not clairaudient and has never heard the name Cynthia before, then a spirit will have to consider other ways of getting her name across. Yes, spirit can give specific info which is good evidence, but it all depends on the ability of the medium and whether the link is strong or weak. Symbols are sometimes used to conserve energy from the spirit and the medium. It's up to the medium to be able to interpret the symbols correctly, if they can't then the message or part of the message won't be delivered. I've only seen one medium give evidence as you describe above -Joe Smith.... That was the late Gordon Higginson. Very few mediums are able to deliver a message the way he could. However, he was born with the ability and his mother was a medium. I'm in no doubt this would have helped him with his mediumship.