About 2 weeks ago, I provided a couple of posts, Skyhooks and Cranes, and Agency Reductionism, covering the first chapter of Angus Menuge’s book Agents Under Fire. I didn’t think it would take me another two weeks to finish the second chapter, but such is life.
Chapter 2 begins with a quote from Thomas Nagel:
There seems to be no room for ageny in a world of neural impulses, chemical reactions, and bone and muscle movements.
This sets the stage for dealing with the problem strong agent reductionism (SAR) presents for science. SAR thinks that the concept of agency in which an agent is understood as one who has representations that (1) exhibit intentionality, that (2)serve as reasons for action, and that (3) involve self-representation, is bankrupt. This “old” concept of agency, Menuge refers to as folk psychology (FP) throughout this chapter. SAR applies the same strategy provided by Darwin to eliminate agency in our natural environment to ourselves. Talk of human agency is replaced with the scientific explanation of blind automatic mechanisms of neuropsychology.
This chapter was a little tougher to get through. It was much more philosophically rigorous than chapter 1. A great deal of time is spent explaining Paul Churchland’s program of Eliminative Materialism (EM) as an example of SAR, and then providing reasons that Churchland’s EM (and, also SAR) is untenable. Without attempting to provide a detailed summary of Menuge’s discussion (which I would probably not do very well anyway), I’ll just provide a summary of the conclusions of the arguments (For the details, you’ll just have to read it yourself).
Menuge asserts that the scientific materialist cannot adopt SAR in any form because it undermines the rational practice of science. It is incompatible with the rational principles of scientific method. SAR attempts to remove any concept of design and intentionality from nature. Menuge makes an interesting observation that when Darwin discarded design from nature, he still generally assumed that huamsn themselves designed things and had intentions. He contrasted apparent design with real design (like a watch). The force of this comparison rested on the idea that design is a legitimate concept. According to SAR, however there is no real design at all - all design is only apparent. The proponents of SAR have no real design left from which to distinguish apparent design. Design is an illegitimate concept.
Menuge makes the pont that SAR undermines the very idea of scientific explanation:
It does so by robbing explanations of the appearance of design or intentionality of a meaningful contrast with real cases and by denying the very notion of understanding that explanation presupposes. Science is a particular exercise in practical rationality, and this exercise cannot be understood, indeed cannot exist, in the absence of desgin and intentionality. SAR thus proposes a program of materialism that cannot claim to be scientific.
The second quote with which Menuge began the chapter is from C.S. Lewis:
You cannot go on “explaining away” forever: you will find that you have explained explanation itself away… To “see through” all things is the same as not to see.
Menuge restates this point by saying that:
… unlimited reductionism in science would be self-refuting since it would explain away the very notion of explanation upon which the project of scinece relies.. It is as if a man who wants nothing more than peace and quiet starts by eliminating all the noisy distractions in his environment and ends by committing suicide because he cannot bear the sound of his own heart beat.
That last statement vividly illustrates the problem with SAR. Removing design and intentionality from science renders it “inscrutable, pointless, and practically impossible” since scientific rationality is fully dependent on intentionality and design. I’ve, of course, not provided Menuge’s full reasons and argumentation for these statements. That would take a chapter in a book… which it did.
In his next chapter, he addresses a weaker form of agent reductionism (WAR). After I’ve read that I’ll try to summarize.