But to someone who doesn't know what numbers or addition...
Universal Truth/Morality
Here's what this debate comes down to: you are confused on the distinction between what we THINK is true and what is actually true. This quote from you is particularly telling: "To most of us, one plus one equals two. But to someone who doesn't know what numbers or addition is, they don't agree. In their minds, it is correct, and, for them that is true." essentially, you are just denying that anyone can ever be wrong. Empirically, this seems false and it goes back to my first point in round 1. You do not actually believe this because you are debating with me over what's true. If you bought your own argument you should just say "the universality of truth is true for you, but it's not true for me". Look, it's built into the concepts of 1, 2 and addition that 1+1=2. If you disagree, you have not understood the concepts. A priori knowledge (knowledge independent of experience) works this way, the fact that some people disagree is no argument against it. In fact, even if everyone agree, it would not change the truth of the statement. You are working off of a definition of truth that is inextricable from public opinion -- this definition does not work. The Truman show example is also a poor one. When Truman thought his family really loved him, he was wrong -- no two ways about it. Now, your point is that I could be wrong in all of my assumptions and I grant this point, but the actual truth of the matter is independent of my beliefs and is But to someone who doesn't know what numbers or addition is, they don't agree. In their minds, it is correct, and, for them that is true." essentially, you are just denying that anyone can ever be wrong. Empirically, this seems false and it goes back to my first point in round 1. You do not actually believe this because you are debating with me over what's true. If you bought your own argument you should just say "the universality of truth is true for you, but it's not true for me". Look, it's built into the concepts of 1, 2 and addition that 1+1=2. If you disagree, you have not understood the concepts. A priori knowledge (knowledge independent of experience) works this way, the fact that some people disagree is no argument against it. In fact, even if everyone agree, it would not change the truth of the statement. You are working off of a definition of truth that is inextricable from public opinion -- this definition does not work. The Truman show example is also a poor one. When Truman thought his family really loved him, he was wrong -- no two ways about it. Now, your point is that I could be wrong in all of my assumptions and I grant this point, but the actual truth of the matter is independent of my beliefs and is universal. Our ability to approach it, however, may not be. In fact, "I think therefore I am" is a good example of a statement that is true for everyone if you have understood the concepts of the syllogism. This also links into the morality debate. Solarman's disagreement that the holocaust was wrong has absolutely no effect on its wrongness. Morality is universal, some people are just wrong.