8. A system, comprising: one or more computer processors; and a memory containing a program, which when executed by the one or more computer processors, performs an operation comprising: receiving, by a question answering system, a case from a user; assigning a first level of user sophistication, of a plurality of levels of user sophistication, to the user; determining a level of evidence sophistication, of a plurality of levels of evidence sophistication, associated with each of a plurality of items of supporting evidence in a corpus of information used to process the case; selecting a subset of the plurality of items of supporting evidence based on the determined levels of user sophistication and evidence sophistication; and returning the selected subset to the user as part of a response to the case.
10. The system of claim 8 , wherein the first level of user sophistication of the user is assigned based on at least one of: (i) a profile of the user, (ii) a default level of sophistication associated with a deployment of the question answering system, and (iii) a level of sophistication of an input provided by the user.