IF one for e.g. could a) define love in terms of brain function and b) accurately measure someone's brain functions to a sufficiently large degree of accuracy and precision, one could answer it. Not being feesable right now, we use approximations of varying validity to attempt to answer these questions.
As you noted, that's a pretty big 'if.' And anyway, I think you missed the point. Genuine expression of sentiment simply isn't a quantifiable phenomenon in the world today, and is not likely to be one in the near future. Because of this fact (which you do not deny), the most logical conclusion is that empirical observation as a means to validate truth claims has been devalued
in this case, and fully deserves to be retired to the backburner for now. This case is not a unique one. I'll leave the next step up to you.
Additionally unaddressed by your post - the
intrinsic value of sentiment is equally unquantifiable, even in principle. How do you feel about ethical propositions, I wonder?
I could sit here and make a formal list of technical criteria by which to judge a painting, and use it to judge the Mona Lisa
But that has nothing to do with the truth as such, and you know it. The Glasgow scale is a poor analogy, and I think that the above is nothing more than a dodge. Reread my argument.
I'm not sure how they are internally problematic
Did you read the Wikipedia article? Therein, positivism is described by one of its own proponents as "dead as any philosophical movement ever becomes," or something to that effect.
Plus, like seriously, my background academically is in the hard sciences, my worldview and ideas on truth and not truth are based there in.
Perhaps you should consider expanding your philosophical purview. The water's fine, I promise.
Honestly, rangrz, though I do very much appreciate your incisive, consistently lucid presence on this board and elsewhere, it is steadily becoming clear to me that what you are intent upon doing here isn't conducive to 90% of what people call 'philosophy' (and isn't particularly spiritual either) - in fact, I suspect that what you are practicing isn't even philosophy at all, but is, rather, a form of rhetorical apology for your own methodological dogma. Positivism has been thoroughly discredited by everyone whose professional opinion counts, which is about as much authority as you'll ever be liable to obtain in the field of philosophy. With this in mind, don't you think it's time for you to go back to the drawing board, or at the very least to seriously reflect before proclaiming the obvious superiority of your preferred (dubious) epistemic paradigm? Either way, if what you're doing around here isn't truly philosophical nor spiritual in its essence, I strongly urge you to reconsider before making a post that could be construed as overly aggressive re. truth, etc. Your ideas do have merit, but from where I'm sitting, they're hardly ironclad. Declaring someone WRONG is therefore, by my lights as moderator and by the addenda to the P&S Forum Guidelines, unacceptable.
As I'm sure you're aware, philosophy as a discipline is renowned, alongside the natural sciences, for its emphasis on self-criticism and its willingness to concede uncertainty and error in the face of conceptual conflict. Please consider this, and try not to emulate in tone the people that you claim to abhor.