How often have you been to a doctor,taken your car to a garage,called a plumber,builder etc and had an idea at the beginning what the problem(and perhaps the solution)is.
The real "expert" is usually the one who takes the time to listen & gather information from you.
In other words they treat you like you are the expert on you & your problem.
How much of an expert is the person who has to call themselves an expert?
As Lord Sugar put it, "An entrepeneur is not something you call yourself...it is how others refer to you."