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In article <Bsvvwx.G0x@unx.sas.com> sasghm@theseus.unx.sas.com (Gary Merrill) writes:

>A number of years ago David Lewis was writing some papers on the logic
>of time travel.  I seem to recall that this was when he was visiting
>at some university in Australia.  I did not manage to read any of
>these, but I have a vague recollection of seeing at least one
>published version.  It may have been in _Nous_ or the _Australasian_
>Journal_of_Philosophy_.  Anyone familiar with this?  (Or with any
>unpublished stuff he might have done?)

Perhaps you are referring to the Gavin David Young lectures that Lewis
gave at the University of Adelaide (my alma mater) in 1971?  These
turned into "The Paradoxes of Time Travel", published in the American
Philosophical Quarterly in 1976, and reprinted in the second volume of
his collected papers.  (This is fun, but personally I prefer Michael
Dummett's paper on time travel, which gives a novel picture of what
it would look like.)

-- 
Dave Chalmers                            (dave@cogsci.indiana.edu)      
Center for Research on Concepts and Cognition, Indiana University.
"It is not the least charm of a theory that it is refutable."