An outsider to argument theory, should she look through the rich outpouring of our recent work, might be amused to find us theorists not following our own prescriptions. We propound our ideas, but we don't always interact with each other--we don't argue. The essays by William Rehg and Robert Asen make promising start on rectifying this difficulty. I want to discuss them, first, to show how they acknowledge in exemplary fashion a pair of challenges I think we should all be (...) addressing; and next to consider their specific responses. (shrink)

Arguments with what are called "independent" or "convergent" premises are typically diagrammed by using an arrow between each premise and the conclusion. This makes diagramming objections to the reasoning difficult. It also obscures differences in argument structure. I suggest that a single arrow should be used for such arguments and that this is so even in the extreme form of independent premises when the argument is entirely unstructured. I then discuss the diagramming of objections.

I characterize the deductivist ideal of justification and, following to a great extent Toulmin’s work The Uses of Argument, I try to explain why this ideal is erroneous. Then I offer an alternative model of justification capable of making our claims to knowledge about substantial matters sound and reasonable. This model of justification will be based on a conception of justification as the result of good argumentation, and on a model of argumentation which is a pragmatic linguistic reconstruction of Toulmin’s (...) model of argument. (shrink)