Quiz 4

Question:
What is truth value? (Remember that J. Anthony Blair explains that an expression has truth value if it can be affirmed or rejected.)

In The Possibility and Actuality of Visual Arguments J. Anthony Blair says that if a statement can be affirmed or rejected then it has truth value.  He also says that the truth value is determined by the "propositional content." At first when I was reading this I thought that Blair was saying that truth value was simply whether a statement was true or false, therefore I thought the statement had to be more of a fact than an opinion.  Now I realize that if a statement has truth value it does not necessarily mean the statement is a fact, it could be someone's opinion.  If I were to say "This hot chocolate is too rich", another person could either agree with me and affirm my statement or they could disagree and reject.  This means that a statements truth value could be different for two people.  Truth value could apply to a fact.  If it does, then everyone should have the same reaction to the statement whether it is rejection or affirmation.  But the statement could also be an opinion that can be agreed with or not.  In this situation, the truth value differs from person to person.