- Joined
- Sep 15, 2013
- Messages
- 9,427
- Reaction score
- 4,926
- Location
- Australia
- Gender
- Male
- Political Leaning
- Liberal
It's a magic explanation in other wordsYour demonstration is making a modal error. X is proposed as self-justifying and necessary, where Z and Z1 lack this property

Seems like it's more or less time to wrap this discussion up. I really did try, but if you can't persuade a theist-leaning agnostic that your argument is even coherent - let alone plausible, let alone persuasive or conclusive - it's pretty obvious that it's not likely to impress anyone but the Believers. As a quick recap, let me try to steelman your argument and fill in some of the blanks for you:
- Human reason is associated with or predicated on certain immaterial, invariant universals like the Law of Identity
- Something has to ground those "universals" as precondition for reason's possibility (or intelligibility?)
- Since reason exists, it must be necessarily possible (possible in all possible worlds, via S5’s axiom 5)
- From 2 and 3, some necessary thing has to ground those universals in all possible worlds in order for reason to be possible in them
- The only thing capable of grounding intelligible universals would be a universal intelligence
- From 4 and 5, a universal intelligence not only exists but does so as a necessary being, which aptly describes God
But as we've discussed at length,
-- #1 is dubious at best since - much like our language on which it heavily depends - human reason functions fine or indeed best with what we might call a more localized and flexible 'principle of identity' A≈A (which also more accurately reflects the world we experience and have come to know). More importantly
-- #2 seems pretty much incoherent, at least as far as I've been able to decipher; I don't think you've even tried to explain what it means to 'ground' a law or principle or why that is needed for the mere possibility of reason (and I suspect that you have equivocated on this point between its possibility and its intelligibility, as below, not that it's clear even the latter would be any more coherent).
-- #3 is.. not too bad really, I can kind of see why that axiom might have been created and can entertain it in terms of speculation or for the sake of argument, but it's obviously not a sound basis for building further conclusions about the Ultimate Nature of Reality.
-- #4 by this point is built on quicksand so fails already; and while imagining something to be "necessarily possible" is fun to speculate, imagining something to be necessarily actual (besides perhaps existence or reality in the vaguest sense as the baseline for a 'possible world' at all) is just mental masturbation; and as I highlighted above this makes the argument self-contradictory in any case since it makes the "necessary possibility" of reason merely contingently possible (for which your workaround seems to be equivocation between possibility and intelligibility).
-- #5 is about the best I could come up with for your massive, unsubstantiated leap between these dubious universals you've invoked and the deity you invoked to *ahem* 'ground' them, but it's not a fact or even really an argument, just a bit of word-play.
So all in all... not really even a coherent argument as you've presented it, or even as I've tried to tidy it up and fill in the blanks, and even if we went waaaay out on a limb and blindly assumed that #1 and #2 were both true and coherent, we'd still fail at #4 (to avoid self-contradiction) and #5 (with existence or reality in the vaguest sense being a plausible candidate to 'ground' universals, and the only 'thing' we can reasonably posit as necessarily existing).
Last edited: