This is all subject of those very long conversations about causal closure, right? The causal closure principle being that real effects must have physical causes. Space of reasons, normativity, free will and determinism, all that.
Remember, this thread starts with philosophy of biology (and by implication evolution). In that context, the mainstream theory is the emphasis is on physical causation as distinct from intentional or purposive behaviour. The corresponding debate in the general sense, is whether human intentionality and reason are themselves attributable to physical causation or are simply products of physical causes:
The general idea, then, looks something like this:
• The true nature of things is evident only at the bottom, and so we must understand life from the bottom up.
• What we find at the bottom are scraps of molecular machinery.
• Through the power of natural selection — which operates like a mindlessly mechanistic algorithm (Dennett) or a blind, unconscious automatism (Dawkins) — these low-level molecular machines slowly evolve into the kind of apparently purposeful, complex entities we recognize as organisms, including ourselves.
• Whatever we are to make of this appearance of meaning and purpose — including my own intentions as I write this and yours as you read it — we are both urged to shed our prejudices and acknowledge that we with our intentions somehow arise from more basic, underlying processes that are essentially dumb, meaningless, and mindless.
Evolution and the Illusion of Randomness, Steve Talbott.
Now, surely you don’t think like this, nor most of the other contributors to this discussion, but nevertheless that is the main foil for this debate.
On the contrary, I think the popular view is that we have an excellent grasp of the past, far more accurate than our forebears, and on one level this is perfectly true, through evolutionary biology, geology and cosmology. But where I differ from scientific realism, is to insist that this understanding is still reliant on the perspective that only the observer can provide. Evan Thompson et al quote Merleau Ponty to this effect in their book The Blind Spot:
For what exactly is meant by saying that the world existed prior to human consciousnesses? It might be meant that the earth emerged from a primitive nebula where the conditions for life had not been brought together. But each one of these words, just like each equation in physics, presupposes our pre-scientific experience of the world, and this reference to the lived world contributes to constituting the valid signification of the statement. Nothing will ever lead me to understand what a nebula, which could not be seen by anyone, might be. Laplace’s nebula is not behind us, at our origin, but rather out in front of us in the cultural world ~ Merleau Ponty, The Phenomenology of Perception, p465
Quoted in:
The Blind Spot
Adam Frank; Marcelo Gleiser; Evan Thompson;
A quote that often produces a violently hostile reaction ![]()