Having said all of that, what a psychic can tell is varied. First, you have to establish what kind of information you are seeking. Second, you have to find the right psychic who can provide you with this information. Now, not all psychics are created equal and this article assumes that you have done your homework and have established that you are working with a professional and ethical practitioner.
There are some psychics out there who claim to be 100% accurate, can tell all, knows all, that they are a psychic, a medium, an astrologer, crystal reader, reiki master, etc. I find that psychics that claim to be everything to everyone, most likely are probably neither professional nor ethical. Find out specifically what your psychic does best! Many professional psychics will tell you what they can and cannot do. For instance, a medium can be a psychic but all psychics are not mediums. So if you are wishing to contact a loved one who has crossed over, then you should seek an authentic psychic medium. All psychics are NOT mediums. Some psychics are clairvoyant (which means clear seeing) and have visions. The same goes for someone who is empathic who can “feel” another’s emotions. Some psychics can do both, but some can do only one or two practice areas very well.
Whether a psychic is clairvoyant, clairaudient, empathic, telepathic, a medium, uses divination tools such as Tarot, Runes, I Ching, or even numerology and astrology, the extent to which they can tell you certain information will be based on their experience in their craft, their skill, knowledge and natural gifts. All these elements play a part in getting you accurate psychic information during your reading and you especially want someone who is knowledgeable if they are going to be able to help you based on channeling from a higher realm. Some psychics use tools, some do not. Depending on how a psychic worker discovered their gift and how they have practiced it, will determine their skill level. There were actually people showing her their butts and she would read them. Go figure. No one should ever judge what it is that connects a person with higher consciousness. For some it may be the Tarot for others could be butts, but spiritual gifts come in all shapes and sizes, no pun intended. It is mastery that should concern us. Psychic mastery is a discipline like anything else and anyone seeking psychic advice should want someone who has mastered their gift to a certain degree in order to help others with it.