Socrates’s explanation of generation and change at the end of Phaedo
1.) The Platonic doctrine of the good explains how mind causes natural things. The mind relative to truth is not a principle of change in the extramental world – all the mind’s relation to the extramental world are acts of will with good as their object.
2.) The doctrine of the good is in direct an intentional conflict with what we would now call methodological naturalism, or the necessity of restricting physical explanations to non-mental causes.
3.) Socrates’s initial argument is that apart from the action of mind we can’t even explain basic arithmetical facts: when 1 + 1 = 2 does the first one become two? The second? Is the addition itself what makes two? When mind imports order to the question the answer is intuitive and obvious.
4.) In physical actions we have the same problem. Asteroids slam into each other – which is cause and which is effect? This generalizes since physical interaction is by definition homogeneous and so, at the moment of causing, there is as much action of A on B as B on A. If we say the cause is prior in time we only identify potential and not actual causes.
5.) Where causality is restricted to the physical actual causes vanish. In this sense the normal sense of methodological naturalism is anti-scientific.
6.) Aristotle’s account of methodological naturalism is a preference for proximate over remote causes, not a ruling out of all remote causes, even those of another genus or science. Aristotle’s preference for the proximate is very different from our (supposedly axiomatic) absolute closure to the remote.
7.) An absolute closure to remote and eminent causality therefore does away with science. A closed nature is not not an object of science as opposed to perspective or doxa.