>> It is possible Axiom P is not true.
> It is possible VG is a Muslim bomber-wannabe; therefore what she says can't be used against her in a court of law.
It's very simple. Logic 101. Please try to follow along.
Premise A: All leather is made from animal skin.
Premise B: The cover on the book on my dining room table is made of leather.
Conclusion following A and B: The cover on the book on my dining room table is made from animal skin.
If it's possible that the cover of the book on my dining room table is made of vinyl, then you CANNOT use Premise B to prove the Conclusion.
Get it?
But, what if ALL leather is NOT made from ANIMAL skin?
Is THAT possible?