1. A system for differential dynamic content delivery, the system comprising: means for providing to a multiplicity of users a presentation including content from a session document; means for streaming presentation speech to the user including individual speech from at least one user participating in the presentation; means for converting the presentation speech to text; means for detecting whether the presentation speech contains simultaneous individual speech from two or more users; and means for displaying the text if the presentation speech contains simultaneous individual speech from two or more users, wherein means for providing to a multiplicity of users a presentation including content from a session document further comprises: means for providing a session document for the presentation, wherein the session document includes a session grammar and a session structured document; means for selecting from the session structured document a classified structural element in dependence upon user classifications of a user participant in the presentation; and means for presenting the selected structural element to the user; and wherein means for selecting a classified structural element further comprises means for selecting a classified structural element having an associated classification identifier that corresponds to the user classification.