Here's what I'm thinking about Thompson's argument. I want to agree with the conclusion that we can interpret moral judgments naturalistically, i.e., that virtue ethics could have a sound meta-ethical basis. But I'm not convinced by Thompson's arguments against the empiricist propositions, and I'm not even clear on what the propositions really mean. That leaves me either looking for a way to make room for the "autonomy of ethics" and natural goodness within a framework of empirical concepts, or beset with doubt over the distinction between empirical and a priori.
So in this post I'm going to dodge the jellyfish and look at the section headed "Against the empiricist propositions".
These are the empiricist propositions:
- The concept species or life form is itself an empirical concept.
- Concepts of particular life forms (moon jelly, umbrella jelly, white oak, horse- shoe crab, human) are invariably empirical, or observation-dependent, concepts.
- Singular representations of individual organisms are invariably empirical rep- resentations.
- Substantive knowledge of any given individual organism (propositions of types A, C and D) can only arise from observation.
- Substantive knowledge of the character of a given species or life form (propo- sitions of types B and E) can only arise from observation.
And these are Thompson's counter-propositions:
- The concept life form is a pure or a priori, perhaps a logical, concept.
- The concept human, as we human beings have it, is an a priori concept attaching to a particular life form.
- A mature human being is typically in possession of a non-empirical singular representation of one individual organism.
- Individual human beings are sometimes in possession of non-observational knowledge of contingent facts about one individual organism.
- Human beings are characteristically in possession of some general substantive knowledge of the human life form which is not founded empirically on observation of members of their kind, and thus not ‘biological’.
In this post I'll probably just look at the first proposition and counter-proposition.
Inevitably I found myself wondering: what
is an empirical concept? Thompson describes it as an "abstract precipitate of observation", and this seems like the standard view. Kant's view is interestingly different. On the one hand, Kant agrees that an empirical concept is a general concept derived and abstracted from appearances. But he has another, more original way of describing empirical concepts. Using a fortuitous example, he says this about empirical concepts:
The concept of a dog signifies a rule according to which my imagination can trace, delineate, or draw a general outline, figure, or shape of a four-footed animal without being restricted to any single and particular shape supplied by experience. — Kant, CPR A141
An empirical concept is a rule that can be repeatedly and consistently applied to appearances to achieve a general representation. In this example, the concept of a dog is a rule whereby we can bring particular dogs in experience under the general representation of
dog as a class or form. (Whether Kant really does identify the concept with the rule doesn't concern me now).
...whereas all intuitions, as sensible, rest on affections, concepts rest on functions. By function I mean the unity of the act of bringing various representations under one common representation. — CPR B93
Concepts are active, not passive. In a certain sense they order our active experience. An empirical concept on this view seems something more than just an "abstract precipitate of observation".
Thompson's first point against the first empiricist proposition is that the five judgments can apply to things that are "utterly different from one another in material content":
The umbrella jelly, the hayscented fern, the spirochete, the human being, slime molds, turnips, tarantulas: how much more different can things get? Yet in all cases our five forms of judgment find a foothold. We see nothing unintelligible in imagining even more violently different forms of life arising on other planets, or even under different regimes of fundamental physical law. It seems that a very abstract grammar finds a place in the description of all these things, the grammar we found by reflecting on your study of the umbrella jelly. This intellectual structure is not a response to a common empirical feature of things, but is somehow carried into the scene. — Thompson
It seems to me that although there may be an intellectual structure carried into the scene, it doesn't follow either that this structure is not empirical, or that the relevant structure is that of life forms. Don't we carry the concept
mammal, which Thompson accepts is an empirical one, into observations of both dolphins and monkeys? And if we also agree that there
is an a priori intellectual structure carried into the scene, couldn't we say that this structure is not that concerning life forms, but is rather that which lies behind these concepts, pure a priori concepts such as
universal and particular or
form and individual?
Next, he says that the reciprocal interdependence between
natural historical judgments about life forms and
vital descriptions of individuals, described in the first part of the paper, lends support to the a priority of life forms.
... almost everything we think of an individual organism involves at least implicit thought of its form. — Thompson
To me this doesn't seem to carry the point. For one thing, I imagine many of his critics could agree. He says that the life form concept is "everywhere at work" and that we "arrive at an explicit conception of it by reflection on certain of the forms of thought of which we are capable". I think he is suggesting that the
implicit nature of the life form concept entails that it is a priori. But can't one absorb an empirical concept such that it becomes part of the way one implicitly structures experience? Is this enough to make it
a priori? (maybe it is, as Thompson is using these terms). Alternatively, the life form concept may be no different from the concept of a mammal, in that the implicit a priori structure is what lies
behind it, allowing us to distinguish generally between form and individual.
It's at this point that I begin to lose my grip on the
a priori-empirical distinction, wondering if empirically formed concepts can become a priori. The concept of a life form may develop from experience based on a person's socialization combined with primitive a priori concepts or faculties; and indeed, based on the formation of personal identity and the "I".
Does it matter? Thompson seems to accept that if the
human form of life is an empirical concept, then virtue ethics is biologistic or may as well be. But I don't quite see why this should be, because describing the human form of life requires more than just biology.