WHY DO MEDIUMS REMAIN YEAR AFTER YEAR WITHOUT ADVANCING?

Because of their unwillingness to walk before they run; to learn the alphabet before they read. They should take one phase and perfect themselves in that. It is asking too much of spirit friends to do for us what we should do for ourselves; to give us instruction we can as well gain in books, or by clairvoyance show us what can be better seen by the physical eyes.