The behavior of crocodiles, cockroaches, and even mammals reflect functional intelligence—what works pragmatically—but that’s not the same as rational insight, which is the ability to perceive and evaluate logical relations among ideas.
More to the point, if we reduce reason to adaptive success—if it’s “just what works” in evolutionary terms—then we undermine the normative authority of reason itself. After all, reason doesn’t just describe what we do—it tells us what we ought to believe, based on validity, coherence, and evidence. But if reason is just a tool of survival, why trust it in matters beyond basic survival? Why trust it to tell us the truth about consciousness, the universe, or even evolution itself? — Wayfarer
If there isn’t one already, we probably need a whole thread just on the status of reason. The argument made by Nagel seems to treat reason as something almost magical, something that exists outside of nature and therefore can't be a product of the natural world and its processes. But wouldn’t you have to demonstrate that logic and mathematics are not natural, constrained, and context-bound systems? Isn't it the view of phenomenology that reasoning is grounded in the structures of experience, in how the world appears to us through perception, intention, and context? This is highly specialised and beyond the expertise of most of us.
Science—and philosophy—both presuppose that the world is intelligible. Even raising the question of whether it should be assumes a rational order that allows the question to be posed in the first place. So rather than doubting intelligibility, the more pressing issue is: what kind of ontology can account for the fact that intelligibility is possible at all?
If physicalism treats intelligibility as an accidental byproduct of blind processes, then it risks undermining the rational basis of its own claims. This concern is related to what some have called the argument from reason (C.S. Lewis) or the evolutionary argument against naturalism (Alvin Plantinga): namely, that if our minds are solely the product of non-rational forces, we have little reason to trust their capacity for reason—including our belief in physicalism itself. — Wayfarer
All very interesting and well described. I notice you wrote "risks undermining" not "undermines" why isn't it a slam dunk? I thought it was your thesis that meaning can only exist if there is some form of guarantee for all meaning - a transcendent source. You often seem to maintain that there needs to be a higher-order purpose for any kind of purpose at all to be possible? But I may have this wrong.
The fact that we can ask questions or construct models doesn't guarantee that the world is inherently intelligible in the absolute sense. Our frameworks of understanding might simply reflect the cognitive and pragmatic structures we’ve evolved, not the deep structure of reality itself. Intelligibility might be a projection of mind rather than a property of being. So the salient question is not what ontology makes intelligibility possible, but whether our sense of intelligibility is anything more than an anthropocentric artifact. Can this even be answered?
This probably brings us to domains like mathematics, where some argue its famous uncanny effectiveness demonstrates a deeper connection to reality. But whether this points to a transcendent order or simply reflects the structures we project onto the world remains an open question. I also doubt we can answer this question right now.
And reason? Is it a conduit to something beyond the human, a reflection of objective order, or merely a contingent adaptation, evolved to navigate the constraints of our particular reality, and perhaps of only provisional use? Isn’t it the view of phenomenology that reasoning is grounded in the structures of lived experience, how the world shows up for us through perception, intention, and context? It’s a complex perspective and likely beyond the grasp of most of us without specialised training.
I don’t have the answers to any of this, but I remain a kind of doubting Thomas. I find it difficult to see why meaning must be grounded in necessity or guaranteed by something absolute. Could it be that humans are unrealistically impressed by reason, treating it as the highest or even only valid form of understanding? But reason is just one tool among many, and has limited use. It struggles with emotions, ambiguity, and subjective experiences. It's clear that no logical argument can fully capture grief, happiness, aesthetic appreciation, or empathy. I wonder if we overestimate its power, forgetting that perhaps it evolved for survival, not for solving metaphysical puzzles or guaranteeing truth.