I raise several questions about the semantic interpretation of evidentials, supposing throughout that they are only through grammaticalization distinguished from main Verbs, and thus amenable to abstract study, even through languages that do not support evidential morphology. These questions point to distinctions that are often not made, and sometimes not even considered, in the important and growing literature on the topic. A major question is: does a person who asserts an evidential sentence say one thing, or two? Some links to well-known philosophical topics, such as first-person authority, are also explored.