Chapters 1-12 of this volume contain the papers on infonnal logic and argumentation that I've published and/or read at conferences over the last 17 years. These papers are reproduced here pretty much unchanged from their first appearance; it is my intention that their appearance here constitute a record of my positions and arguments at the time of their original publication or delivery. I've made minor changes in fonnat, in the style of references, etc., for the sake of consistency; I've also corrected typographical errors and the like. The only extensive changes in wording occur in the last...

Chapters 1-12 of this volume contain the papers on infonnal logic and argumentation that I've published and/or read at conferences over the last 17 years. These papers are reproduced here pretty much unchanged from their first appearance; it is my intention that their appearance here constitute a record of my positions and arguments at the time of their original publication or delivery. I've made minor changes in fonnat, in the style of references, etc., for the sake of consistency; I've also corrected typographical errors and the like. The only extensive changes in wording occur in the last...