http://friam.383.s1.nabble.com/Re-Downward-Hicausation-tp7590898p7590909.html
What great timing! One of the best philosophy comics on the web right now is "Existential Comics." This very week they took a swipe at "causation." Here is an adventure of Sherlock Hume:
http://existentialcomics.com/comic/212I suspect that the best I can do to contribute beyond that is to try fall back on my role of scolding Nick.
Nick
should be asserting that "causation" is a metaphor. The billiard ball are the understood scenario. Billiard balls sitting on a still table, unmolested don't move. But if you knock one ball into another ball, the other ball move so. When I say something like "The approaching lion
caused the gazelle to move", I am invoking the metaphor that the lion-gazelle relationship is like that of the billiard balls. Had the lion not been doing what it was doing, the gazelle would not have moved away. It isn't simply a "counterfactual." It is an assertion (an
abduction) regarding broad patterns of gazelle behavior that can be readily observed under many other situations.** Some of those, I have presumably already seen. Those constitute the "basic implication" of the metaphor. Others I have not observed, and those constitute potential investigatory events - not ethereal thought experiments. As in true of any metaphor, there are also aspects of the billiard-ball scenario I do not intend to map perfectly onto the lion-gazelle scenario (e.g., the lion and gazelle are not spheres).
So that is where Hume and those like him go wrong. They want to beat the billiard balls scenario itself to death. But that's not how metaphors work. There is something understood about the billiard balls, and it is that-understood-thing that is being generalized to another scenario. Any attempt to explain the billiard balls will involve evoking
different metaphors, which would entail different assertions (abductions). There is no foundation (Peirce tells us, amongst others), Descartes was on a fool's errand: In the land of inference, it is turtles all the way down.
** The breadth of the patterns being referenced is, I believe, where Frank's point about probability slips in. One could certainly simplify the complexity of the assertion by making lumping similar scenarios together and speaking about the probability of a certain gazelle behavior within the cluster of similar situations.
Meets Fridays 9a-11:30 at cafe at St. John's College
by Dr. Strangelove