1. A consultative system containing an advice and having a projection device, for helping a user to improve one's interactive ability by analyzing a particular person's behaviors in a simulation environment, said particular person being selected from a group including said user, a person different from said user, and a virtual person, said system comprising: building a plurality of virtual events for said advice, said plurality of virtual events involving interactions among two or more persons; projecting said plurality of virtual events by said projection device; capturing a response from said particular person; analyzing said response according to said advice to produce a report; and providing said report to said user, whereby said system guides said user to observe and examine said particular person's behaviors in a simulation scenario so that said user can learn effectively from both one's own behaviors and other person's behaviors and is able to apply said advice more naturally in a real life.
3. The system in claim 1 , said system further comprising means for processing advices, wherein said means for processing advices comprise means selected from a group including means for collecting, comparing, modifying, formatting, organizing, saving, searching, and displaying advices, means for building links among various advices, means for splitting an advice into two advices, means for merging two advices into one advice, means for adding an example to a particular advice, means for making comment on a particular comment, means for identifying assumptions associating with a particular advice, means for specifying an application scope for a particular advice, means for attaching restriction on a particular advice, means for dispatching an advice as text, image, symbol or sound, and means for providing discrimination among similar advices.