Free Will => Everything is True (somewhat)

The fundamental law of free will implies there is a rule against omniscience.

The rule against omniscience implies there cannot be an accurate theory of everything.

This implies theories either have to be incomplete, or wrong in certain areas, or have to self-limit their scope.

This implies that whatever theory we adopt, they are incomplete in some ways and is never totally correct.

From the perfectionist perspective, this means all theories are "wrong".

But another way to look at it is that, all theories are correct as chosen and adopted.

The modern way of attacking theories in the form of "your theory cannot be right because <flaw>" is not helpful except to show that "all theories are wrong" (which is, unless you're aiming at nihilism, not helpful), because we already shown that all theories have this problem. 

Instead, we must reflect on *why* we choose and adopt particular theories. Is it Occam's razor? Or something else? Or do we have particular axioms and prefer the theories that allow them?

But, in the end, it's still a matter of choice. And because we (those who do not prefer nihilism) prefer not to point at some flaws of a theory and label it wrong, it's probably more useful to think of them as all equivalently "correct" (this admittedly reeks of objectivism though!), and thus all valid choices.