the main difference between ouija and necromancy: the information derived from ouija is a product of what the forces wish to convey to you, true or false. necromancers on the other hand, have complete control ofer the forces , both good and bad. they MUST answer you truthfully, as they are bound and have no other choice. the only use i have found for ouija is to convince non-believers that the 'other side' does indeed exist.