Is it possible to know the truth value of a statement without knowing any information about that statement?
If no, then to me that would imply that truth values are not absolute and depend on how we interpret the language or symbols that the statement contains. Without knowledge of the statement itself, its truth value is not an inherent property that can be determined, but a consequence of the meaning applied to the statement.
If yes, then to me that would imply that truth values exist independently of our knowledge of the objects or ideas in question. The next question would be whether or not we can access these values despite our ignorance. In a poetic way, "Does truth bear witness to itself?" If I know nothing of mathematics or its symbolic language, can I still know the truth value of "1+1=2" And more to the point, can the following statement ever be true? "I don't know what it is, but I know it's true simply because it's true. I may not know how I know that it is true, or why it is true, but it's congruent with everything else I know to be true."