I'm going to chime in here, and tell you about my experiences with the mediums.
I think we go in at times expecting almost a verbal communication between our loved ones and the medium and so why wouldnt the medium be getting the information correct? I mean, they are in direct communication.. they should know?!
But I have discovered it doesnt work that way.. they werent in our lives, they dont know our experiences, and what it actually is, is a big game of telephone and they are trying their best to get it right.
I found that if I just let go of expectations, understand that whoever comes through comes through, and just be good with it, it seems to work better. I also think asking for clarity, for more information helps. I have had to do that, and the information became clearer.
This is just my experience.
(re the bold text) Some mediums are clairaudient - they 'hear' (not using their ears though) what their communicator is saying to them. With such mediums it's an approximation of verbal communication.
Some mediums are clairvoyant which means they see (but not with their physical eyes) the communicator and hence can offer a description of the communicator's appearance.
For me one of the least satisfactory versions of evidential mediumship is the kind where symbols and impressions are the means of communicating with the medium. Too much is open to mis-perception and mis-translation. But one has to go with what's available and finding a reputable medium of any flavor can be hard enough.
Asking for additional information is reasonable in my view, information that can be evaluated by the receiver because ONLY the receiver matters.