@Thomas,
Thomas wrote:It's about his terms. At the very least, I'm saying that his general terms permit for the don't-lie imperative to be conditional and for the decrease-suffering-increase-happiness imperative to be categorical. There's no conflict in that with reason, or with his general formulation of the categorical imperative.
Oh, OK. In that case, you're wrong. Clearly, Kant thought that the rule against lying was in conformity with the categorical imperative. On the other hand, any rule that relied on the "rightness" of the consequences for the "rightness" of the act is, at best, only hypothetically imperative.
Thomas wrote:So, what if I provided Kant with empirical evidence that this is false? That you can in fact have it both ways---save the victim's life with a lie and preserve the basis of all agreements (...)---by applying a different categorical imperative? Would evidence like that change his mind about the ethics of lying?
You think that empirical evidence would contradict a logical argument? It doesn't work that way. Kant was attempting to
avoid empirical evidence in formulating an ethical system -- that was the whole point. He was looking for something that was
a priori true, i.e. something that didn't rely on empirical evidence for its truth.
Thomas wrote:Continuing to use you as a Kant-simulator: How does Kant resolve conflicts between categorical imperatives?
There can't be a conflict between categorical imperatives. There's only one. Even Kant's different formulations of the categorical imperative were, according to Kant, just variations on a single imperative. We can, for shorthand purposes, refer to the rule against lying as a "categorical imperative," but it's actually just an application of
the categorical imperative to a particular act.
Thomas wrote:For example, I'm pretty sure Kant would disapprove of a rule that permits assisting murderers. He would find that it, too, yields a contradiction and vitiates the source of right. Accordingly, he would conclude that there is a categorical imperative not to help murderers kill their victims. Now, when the murderer asks me if his victim is in the house, and if I don't have the option to be silent, I cannot help but disobey one of the two categorical imperatives at stake. How would Kant choose which one? In your article, he avoids the problem by ignoring any other categorical imperatives that might apply to the case. But that strikes me as intellectual cheating, and Kant isn't generally known as a cheat. So what gives, and why?
As far as I can recall, Kant doesn't really talk about conflicts among rules or "higher order" rules, probably because he didn't think such conflicts were possible. If the categorical imperative was based on logic and reason, and a conflict among ethical choices constituted a contradiction, then such a conflict would be impossible, since a contradiction represents a break with logic.