84. The non-transitory computer-readable storage medium of claim 80 , wherein the interactive environment includes a graphical user interface, wherein the client's input is given by pointing and/or selecting graphical objects on a display.
84. The non-transitory computer-readable storage medium of claim 80 , wherein the interactive environment includes a graphical user interface, wherein the client's input is given by pointing and/or selecting graphical objects on a display. 85. The non-transitory computer-readable storage medium of claim 84 , wherein the graphical user interface is a cognitive graph comprising selectable or point-able graphical objects, wherein said graph represents a context for the body of knowledge.