Let me stake out the radical end:

An argument is a communicative interaction focused on a disagreement. 

(Note that this does not imply it is necessarily verbal.)

Michael



> On Jun 12, 2017, at 4:08 PM, Laura Pinto <[log in to unmask] <mailto:[log in to unmask]>> wrote:
> 
> "arguments are invitations to inference" - RC Pinto, in http://www.dwc.knaw.nl/DL/publications/PU00010684.pdf <http://www.dwc.knaw.nl/DL/publications/PU00010684.pdf>
> 
> Laura E. Pinto, PhD
> Assistant Professor, University of Ontario Institute of Technology
> Associate Member of the Graduate Faculty, Ontario Institute for Studies in Education at the University of Toronto
> From: AILACT DISCUSSION LIST [[log in to unmask] <mailto:[log in to unmask]>] on behalf of Douglas Walton [[log in to unmask] <mailto:[log in to unmask]>]
> Sent: Monday, June 12, 2017 3:11 PM
> To: [log in to unmask] <mailto:[log in to unmask]>
> Subject: define argument
> 
> An argument can be used to support (justify) a proposition or to support or attack another argument.
> 
> Doug Walton
> 
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