Preferred embodiments of the invention provide systems and methods for facilitating multiple users or teams or a group of users or individual users in the development of user thinking about an arbitrary problem in a customized or specialized manner. The system includes logic to facilitate user specification of a problem structure, or a conclusion, or both, and facilitation of specification of a knowledge structure, related to the arbitrary problem. Some embodiments of the systems and methods further provide for the sharing of user models regarding the arbitrary problem.