(April 2, 2018 at 1:57 pm)Khemikal Wrote: @Stretch
If/only/if -- xnor can;t be applied to statements such as the one contained in premise two...you've just established why.
A biconditional is a valid argument, but the natural language employed is not a bi conditional. Hilariously...I've been explaining this to Mystic since he was a deist.......in the absence of a sufficient -and- necessary relationship, we aren't discussing a biconditional.
I agree that it doesn't exist in the natural language, but it can be converted into a biconditional because the basic assumption is that moral guidance exists if and only if a God also exists to give said guidance. In other words, the source of moral guidance can only be God and nothing else.